Sergey is solving 5x2 + 20x – 7 = 0. Which steps could he use to solve the quadratic equation by completing the square? Select three options. 5(x2 + 4x + 4) = –7 + 20 x + 2 = Plus or minus StartRoot StartFraction 27 Over 5 EndFraction EndRoot 5(x2 + 4x) = 7 5(x2 + 4x + 4) = 7 + 20 5(x2 + 4x) = –7
5(x2 + 4x + 4) = –7 + 20
x + 2 = Plus or minus StartRoot StartFraction 27 Over 5 EndFraction EndRoot
5(x2 + 4x) = 7
5(x2 + 4x + 4) = 7 + 20
5(x2 + 4x) = –7

Answers

Answer 1

Steps  he could  use to solve the quadratic equation by completing the square is 5(x² + 4x) = –7

What are quadratic equations?

A quadratic equation is a second-degree polynomial equation of the form ax² + bx + c = 0, where x is the variable and a, b, and c are constants. It typically has two solutions, which can be found using the quadratic formula or factoring the equation.

Solution:

The three steps that Sergey could use to solve the quadratic equation by completing the square are:

1.Write the equation in the form ax² + bx + c = 0

2.Add and subtract (b/2)² to complete the square, resulting in an expression of the form a(x + p)^2 + q = 0

3.Solve for x by isolating (x + p)² and taking the square root, resulting in x = (-b ± sqrt(b² - 4ac)) / 2a

Therefore, the three options that correspond to these steps are:

5(x² + 4x + 4) = –7 + 20

x + 2 = Plus or minus StartRoot StartFraction 27 Over 5 EndFraction EndRoot

5(x² + 4x) = –7

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Related Questions

A kite is shown below.
Find the size of angle BCD.
A
117°
B
55°
D
C



PLEASE DO IT

Answers

The value of x and y in the trapezium are 118 and 35 degrees respectively.

How to find angles in a trapezium?

The diagram above is a trapezium. A trapezium is a quadrilateral with 4 sides.  The sum of all the four angles of the trapezium is equal to 360°.

A trapezium has two parallel sides and two non-parallel sides.

Therefore, let's find x and y as follows:

x = 180 - 62(supplementary angles)

x = 118 degrees

y = 180 - 145(supplementary angles)

y = 35 degrees

Therefore,

x = 118 degrees

y = 35 degrees

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can you please solve? thank you

Answers

The symmetry of the functions are

Graph 1: NoneGraph 2: AllGraph 3: x-axis

How to determine the symmetry of the function

In mathematics, the symmetry of a function refers to the property that the function remains unchanged under a certain transformation

Using the above as a guide, we have the following:

Graph 1

Under any transformation, the function would not remain the same when transformed

Graph 2

This function is a circle equation and it would remain the same when reflected or rotated across the axes and the origin

Graph 3

This function would only remain the same when reflected across the x-axis

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I just need the last 2. I don't understand what the last 2 r asking for​

Answers

Answer:

Question 3
Equation for Malik:
y = 350 + 7x

Equation for Saraiah:
y = 400 + 4x

Question 4
Both of them will have the same amount of money after
50/3 years
or
16 2/3 years
or
16 years 8 months

Step-by-step explanation:

Malik's interest rate as decimal = 2/100 = 0.02Saraiah's   interest rate as decimal = 1/100 = 0.01The formula for simple interest is given as
I = P r t\The total amount earned including interest
= Principal + Interest
= P + P · r · t
= P(1 + r · t)We are asked to use y for the total amount and x for the number of yearsIn terms of y = total amount and x = number of years:
y = P(1 + r · x)

#3

Amount in Malik's account after x years given 2% interest
y = 350(1 + 0.02x)
y = 350 + 7x


For Saraiah's account:
y = 400(1 + 0.01x)
y = 400 + 4x

#4

If both Malik and Saraiah have the same amount of money after x years, then the right side of both their equations must be equal

Therefore

[tex]350+7x = 400+4x\\\\\mathrm{Move}\:350\:\mathrm{to\:the\:right\:side \:by \:subtracting\: 350 \:from\:both\: sides}\\350+7x-350=400+4x-350\\\\\mathrm{Simplify}\\7x=4x+50\\\\[/tex]


[tex]\mathrm{Subtract\:}4x\mathrm{\:from\:both\:sides}\\\\7x-4x=4x+50-4x\\3x=50\\\\\mathrm{Divide\:both\:sides\:by\:}3\\\\\dfrac{3x}{3}=\dfrac{50}{3}\\\\x=\dfrac{50}{3}[/tex]

Therefore both of them will have the same amount of money after [tex]\dfrac{50}{3}[/tex] years which is [tex]{16\dfrac{2}{3}[/tex] years

2/3 year = 2/3 x 12 months = 8 months

So both of them will have the same amount of money after [tex]{16\dfrac{2}{3}[/tex] years or 16 years and 8 months


6. A normal distribution has a mean of 48 and a standard deviation of 7. Find the probability
sigerandomly selected x-value from the distribution is in the given interval.
a. Between 34 and 55
b. At most 41
c. At least 48
d. Between 62 and 76
13.5%
2.35%
0.15%
82
34%
34%
111
x 30
-20
13.5
x+ 20

Answers

The probability is approximately 0.8185 or 81.85%.

What is normal distribution?

Normal distribution, also known as Gaussian distribution, is a probability distribution that is commonly used in statistics, mathematics, and the natural sciences to describe real-valued random variables whose distributions are not known.

To find the probability that a randomly selected x-value from a normal distribution with a mean of 48 and a standard deviation of 7 is between 34 and 55, we need to standardize the values using the z-score formula:

z = (x - μ) / σ

where x is the value we want to find the probability for, μ is the mean, and σ is the standard deviation.

For x = 34:

z = (34 - 48) / 7 = -2

For x = 55:

z = (55 - 48) / 7 = 1

We can use a standard normal distribution table or a calculator to find the area under the standard normal distribution curve between z = -2 and z = 1. This area represents the probability that a randomly selected x-value from the given normal distribution is between 34 and 55.

Using a standard normal distribution table, we can find the probabilities as follows:

P(z < -2) = 0.0228 (from the table)

P(z < 1) = 0.8413 (from the table)

Therefore, the probability that a randomly selected x-value from the given normal distribution is between 34 and 55 is:

P(-2 < z < 1) = P(z < 1) - P(z < -2) = 0.8413 - 0.0228 = 0.8185

So, the probability is approximately 0.8185 or 81.85%.

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1, A student took an online test and scored 80 points. If he answered only 3-point and 55-point questions correctly, which equation represents the number of 33-point questions, x, and the number of 5-point questions, y, he answered correctly?
1, 3x + 5y = 80
2, 8 ( x + y ) = 80
3, 8xy = 80
4, 5x + 3y = 80

Answers

Therefore, the correct answer is option 4: 5x + 3y = 80.

What sort of equation would that be?

A mathematical statement that shows the equivalence of two formulas is what an equation through algebra means. For instance, the equation 3x + 5 = 14 consists of the two expressions 3x + 5 and 14, which are split by the 'equal' symbol.

Let the number of 3-point questions answered correctly be x, and the number of 5-point questions answered correctly be y. Then, we can form two equations based on the information given:

3x + 5y = 80 (total score equation)

x + y = ?? (number of questions answered equation)

We cannot determine the exact value of x + y from the given information, so we will leave it as an unknown.

The correct equation that represents the number of 33-point questions, x, and the number of 5-point questions, y, he answered correctly is:

5x + 3y = 80

This equation comes from the fact that the student only answered 3-point and 5-point questions correctly. Therefore, the only way for the student to get a score of 80 is if the number of 3-point questions he answered correctly is a multiple of 3 and the number of 5-point questions he answered correctly is a multiple of 5. Thus, we can write:

x = 33n, where n is a non-negative integer (since the number of 3-point questions he answered correctly must be a multiple of 33)

y = 5m, where m is a non-negative integer (since the number of 5-point questions he answered correctly must be a multiple of 5)

Substituting these expressions into the total score equation, we get:

3(33n) + 5(5m) = 99n + 25m = 80

Simplifying this equation, we get:

5x + 3y = 80

Therefore, the correct answer is option 4: 5x + 3y = 80.

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Calculate the value of the expression-6(-5-4)-4(-3-2)=

Answers

Answer:

74

Step-by-step explanation:

-6(-5-4) - 4(-3-2)

30 + 24 + 12 + 8

= 54 + 12 + 8

= 66 + 8

= 74

Find the accumulated value of an investment of

Answers

Part a: Compounded Semiannually: A = 20,771.75.

Part b: Compounded quarterly: A = 20817.66.

Part c: Compounded monthly: A = 20848.76

Part d: Compounded continuously :A = 407,538.49

Explain about compound interest?As the interest you earn on your savings starts to earn interest on itself, it is what is known as compound interest. As interest increases, it starts to accumulate more quickly and grows exponentially.

Compound interest formula:

A = P[tex](1 + \frac{r}{n} )^{nt}[/tex]

And

A = P[tex]e^{rt}[/tex]

Principal P : $15,000

Time t = 6 years

Rate of interest r = 5.5%

number of time compounded - n

Part a: Compounded Semiannually:

r --> r/2

n = 2

A = 15,000[tex](1 + \frac{0.055}{2} )^{2*6}[/tex]

A = 20,771.75

Part b: Compounded quarterly:

r --> r/4

n = 4

A = 15,000[tex](1 + \frac{0.055}{4} )^{4*6}[/tex]

A = 20817.66

Part c: Compounded monthly:

r --> r/12

n = 12

A = 15,000[tex](1 + \frac{0.055}{12} )^{12*6}[/tex]

A = 20848.76

Part d: Compounded continuously

A = Pe∧(rt)

A = 15,000(2.72)∧(0.55*6)

A = 407,538.49

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13. Debra's backyard has a patio and a garden. Find the area of the garden.
(Sides meet at right angles.)
4 yd
2 yd
patio
4 yd
6 yd
garden
2 yd
6 yd

Answers

The area of the garden alone is 21 yd²

What is an equation?

An equation is an expression that shows how two or more numbers and variables are related using mathematical operations of addition, subtraction, multiplication, division, exponents and so on.

The total length of the patio and garden is 6 yards while the total width is 5 yard. Hence:

Area of garden and patio = length * width = 6 yards * 5 yards = 30 yd²

The length of patio is 3 yard and width of the patio is 3 yard, hence:

Area of Patio = length * width = 3 yd. * 3 yd. = 9 yd²

Therefore:

Area of garden = Area of garden and patio - Area of Patio = 30 yd² - 9 yd² = 21 yd²

The area of the garden is 21 yd²

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Much of Ann's investments are in Cilla Shipping. Ten years ago, Ann bought seven bonds issued by Cilla Shipping, each with a par value of $500. The bonds had a market rate of 95.626. Ann also bought 125 shares of Cilla Shipping stock, which at the time sold for $28.00 per share. Today, Cilla Shipping bonds have a market rate of 106.384, and Cilla Shipping stock sells for $30.65 per share. Which of Ann's investments has increased in value more, and by how much?

Answers

Using basic arithmetic operation, Ann's stock investment has increased in value more, by $331.25, compared to her bond investment, which has increased in value by $378.66.

The current value of Ann's bond investment can be calculated using the following formula:

Current Value of Bonds = Par Value x Market Rate

Since Ann has 7 bonds with a par value of $500 each, the total par value of her bond investment is:

$500 x 7 = $3,500

Using the market rate of 106.384, we can calculate the current value of Ann's bond investment as:

Current Value of Bonds = $3,500 x 1.06384 = $3,725.44

The current value of Ann's stock investment can be calculated by multiplying the number of shares she owns by the current stock price:

Current Value of Stock = Number of Shares x Stock Price

Since Ann owns 125 shares of Cilla Shipping stock and the current stock price is $30.65, the current value of her stock investment is:

Current Value of Stock = 125 x $30.65 = $3,831.25

To determine which investment has increased in value more, we need to compare the difference between the current and original values of each investment. The original value of Ann's bond investment is:

Original Value of Bonds = Par Value x Market Rate = $500 x 7 x 0.95626 = $3,346.78

The difference between the current and original value of Ann's bond investment is:

$3,725.44 - $3,346.78 = $378.66

The original value of Ann's stock investment is:

Original Value of Stock = Number of Shares x Stock Price = 125 x $28.00 = $3,500

The difference between the current and original value of Ann's stock investment is:

$3,831.25 - $3,500 = $331.25

Hence, Ann's stock investment has increased in value more, by $331.25, compared to her bond investment, which has increased in value by $378.66.

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What is the solution to the equation log2 (5x - 2) = -2?

Answers

Step-by-step explanation:

We can solve for x using the properties of logarithms as follows:

log2 (5x - 2) = -2

2^(-2) = 5x - 2 (using the definition of logarithms)

1/4 = 5x - 2 (simplifying 2^(-2))

5x = 2 + 1/4 = 9/4

x = 9/20

Therefore, the solution to the equation log2 (5x - 2) = -2 is x = 9/20.

Simplify the expression. √8/81

Answers

The value of the given expression √8/81 = 2√2/81.

What is square root of a number?

The opposite of squaring an integer is finding its square root. The result of multiplying a number by itself yields its square value, whereas the square root of a number may be found by looking for a number that, when squared, yields the original value. The equation a a = b is true if 'a' is the square root of 'b'. Every integer has two square roots, one of a positive value and one of a negative value, because the square of any number is always a positive number. For instance, the square roots of 4 are both 2 and -2.

Given that,

√8/81

We can write the value of √8 = √(2)(2)(2) = 2√2.

Thus, we have the value of √8/81 = 2√2/81.

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can someone please help me and please show your work

also check your work before posting it​

Answers

Answer:

Step-by-step explanation:

To determine if the graphs of two linear equations are parallel, we need to compare their slopes. If the slopes are equal, then the lines are parallel. If the slopes are not equal, then the lines are not parallel.

In case (a), the two equations are y = x + 3 and y = x + 6. Both equations have a slope of 1, which means the lines have the same steepness. However, the y-intercepts are different (3 and 6), which means the lines are shifted up or down relative to each other. Since the slopes are equal, but the y-intercepts are different, the lines are parallel.

In case (b), the two equations are y = 4x - 1 and y = 1 - 4x. Both equations have a slope of -4, which means the lines have the same steepness. However, the y-intercepts are different (-1 and 1), which means the lines are shifted up or down relative to each other. Since the slopes are equal, but the y-intercepts are different, the lines are not parallel.

In case (c), the two equations are y = 2x - 3 and y = -2x + 3. The slopes of the two equations are 2 and -2, which are negative reciprocals of each other. This means the lines are perpendicular, not parallel.

In case (d), the two equations are 3y = x - 12 and 6y = 2x + 12. We can rewrite these equations in slope-intercept form by solving for y. The first equation becomes y = (1/3)x - 4 and the second equation becomes y = (1/2)x + 2. The slopes of the two equations are 1/3 and 1/2, which are not equal. Therefore, the lines are not parallel.

Answer:

22. Parallel

23. Not parallel

24. Not parallel

25. Parallel

Step-by-step explanation:

The slope equation form of a line is

y = mx + b

where

m = slope

b = y-intercept

If two lines are parallel their slopes, the value of m will be the same, in slope-intercept form

Q22

y = x + 33 → slope = 1
y = x + 6 →  slope = 1

Slopes are the same with = 1
Hence  the lines are parallel

Q23
y = 2x - 3  →  slope m = 2
y = -2x + 3  →  slope m = -2
Slopes not equal hence not parallel

Q24
y = 4x - 1 →  slope = 4
y = 1 --4x or y = - 4x + 1  → slope = - 4  

Slopes are different, hence not parallel

Q25
3y = x - 12
6y = 2x + 12

Divide the first equation by 3
=> 3y/3 = x/3 - 12/3
=> y = x/3 -4    →   slope = 1/3

Divide the second equation by 6
6y/6 = 2x/6 + 12/6
y = x/3 + 2  →   slope = 1/3

Slopes are same, hence parallel

Help I’ve been struggling with math for a while, and I really need help on this. Please help.

Answers

The answer to your question is D.

Please help, look at the photos for the question and write an explanation.

Answers

The correct answer is (C) the total number of rolls sold (small and large).

What are algebraic equations?

An algebraic equation is a mathematical expression that includes one or more variables and mathematical operations such as addition, subtraction, multiplication, and division. The equation asserts that two expressions are equal.

The goal in solving an algebraic equation is to determine the value(s) of the variable(s) that make the equation true. Algebraic equations are used to solve problems in various fields such as physics, engineering, economics, and finance.

In the equation 3s + 135 = 4.5(s + 10), the expression (s + 10) represents the total number of rolls sold (small and large).

To see why, let's break down the equation:

3s represents the total amount earned from selling small rolls (since the

club earns $3.00 for every small roll sold).

4.5(s + 10) represents the total amount earned from selling all the rolls (small and large). The (s + 10) part represents the total number of rolls sold, since the club sold 10 more large rolls than small rolls, which is represented by adding 10 to the number of small rolls sold (s).

Therefore, the correct answer is (C) the total number of rolls sold (small and large).

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Please help me, this question is so confusing and I tried almost every way to solve this and it’s still wrong. It wants me to find how much metal need to make the 16 cans and I tried multiplying 16 and it’s still wrong. Please help! Diameter is 8, height is 9. Please use 3 as pi to solve.

Answers

Answer:

[tex]4992 \text{ cm}^2[/tex]

Step-by-step explanation:

We can model the amount of metal, in square centimeters, that is needed to make a soup can with the expression:

[tex](2 \cdot \text{area of base}) + (\text{area of side})[/tex]

We can first solve for the surface area of a soup can, using the fact that its bases are circles.

[tex]A_{\text{circle}} = \pi r^2[/tex]

↓ substituting 3 for π

[tex]A_{\text{base}} = 3r^2[/tex]

↓ plugging in radius (which is 1/2 of diameter, given as 8)

[tex]A_{\text{base}} = 3(4)^2[/tex]

↓ simplifying

[tex]A_{\text{base}} = 48 \text{ cm}^2[/tex]

Then, we can solve for the area of its side, which we can think of as an elongated circumference (circumference multiplied by height).

[tex]A_{\text{circumference}} = \pi d[/tex]

[tex]A_{\text{side}} = h(\pi d)[/tex]

↓ substituting 3 for π

[tex]A_{\text{side}} = h(3d)[/tex]

↓ plugging in height and diameter

[tex]A_{\text{side}} = 9(3 \cdot 8)[/tex]

↓ simplifying

[tex]A_{\text{side}} = 216 \text{ cm}^2[/tex]

Next, we can solve for the surface area of one soup can.

[tex](2 \cdot \text{area of base}) + (\text{area of side})[/tex]

↓ plugging in solved values

[tex](2 \cdot 48 \text{ cm}^2) + 216 \text{ cm}^2[/tex]

↓ simplifying

[tex]96 \text{ cm}^2 + 216 \text{ cm}^2[/tex]

↓ performing addition

[tex]312 \text{ cm}^2[/tex]

Finally, we can solve for the amount of metal needed for 16 cans by multiplying the amount for 1 can by 16.

[tex]16 \cdot 312 \text{ cm}^2[/tex]

↓ performing multiplication

[tex]\boxed{4992 \text{ cm}^2}[/tex]

A man in a photograph is 1.5 inches in height. If the man is 6 feet tall, what is the scale?


SHOW YOUR WORK ON THE BOTTOM OF YOUR EQUATION!!!
PLEASE AND THANK YOU!!

Answers

Answer:

To find the scale of the photograph, we need to determine the ratio between the actual height of the man and the height of the man in the photograph.

First, we convert the height of the man from feet to inches:

6 feet = 6 x 12 = 72 inches

Next, we can set up a proportion:

actual height of man / height of man in photograph = scale factor

Substituting the given values, we get:

72 inches / 1.5 inches = scale factor

Simplifying, we get:

scale factor = 48

Therefore, the scale of the photograph is 1:48, which means that one inch in the photograph represents 48 inches (or 4 feet) in real life.

The principal represents an amount of money deposited in a savings account subject to compound interest at the given rate.

Principal $3000

Rate 2%

Compounded quarterly

Time 5 years

A. Find how much money there will be in the account after the given number of years.

B. Find the interest earned.

Answers

The required final amount and interest are 3311.05 and 311.05

What is Compound interest?

When you make interest on both the money you've saved and the interest you've earned, this is known as compound interest.

According to question:

A. To find the amount of money in the account after 5 years, we can use the formula for compound interest:

[tex]$$A = P \left(1 + \frac{r}{n}\right)^{nt}$$[/tex]

where A is the final amount, P is the principal, r is the annual interest rate (as a decimal), n is the number of times the interest is compounded per year, and t is the number of years.

In this case, P = $3000, r = 0.02 (2%), n = 4 (compounded quarterly), and t = 5. Plugging in these values, we get:

[tex]$$A = 3000\left(1 + \frac{0.02}{4}\right)^{4\cdot5} \approx $3311.05$$[/tex]

Therefore, there will be approximately 3311.05 in the account after 5 years.

B. To find the interest earned, we can subtract the principal from the final amount:

[tex]$$I = A - P = $3311.05 - $3000 = $311.05$$[/tex]

Therefore, the interest earned is 311.05.

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Match the correct units for the answer of each formula.

Answers

Step-by-step explanation:

Refer to pic............

3. Carnivorous plants have some unique and amazing characteristics. What do these characteristics
suggest about life and the world that we live in? In other words, what can carnivorous plants teach us
about the world? Make a point and support it with an example from the text. Explain what your support
shows.

Answers

We have no control over our cravings, affection, passion, or avarice. Humans and plants have many characteristics. You eat human flesh because you are a plant. Our way of life is represented by the plant.

What are carnivores animals?

Whether by hunting or scavenging, an animal or plant that consumes meat gets its food and energy needs from animal tissues (primarily muscle, fat, and other soft tissues).

The majority of the member species of the order Carnivora are known by the technical term "carnivoran," although confusion is often caused by the resemblance between the name of the order and the name of the diet.

So, in the given situation as the grows and as the money grows, it demonstrates that we are all looking out for one another.

In some ways, we are all carnivorous plants.

We all commit murder.

We are powerless against our hunger, love, passion, and greed. Plants and humans are similar in many ways.

What we desire is to live, and to exist in this world. You are a plant that consumes human flesh.

The plant represents our way of life.

Therefore, we have no control over our cravings, affection, passion, or avarice. Humans and plants have many characteristics. You eat human flesh because you are a plant. Our way of life is represented by the plant.

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Complete question:

Carnivorous plants have some unique and amazing characteristics. What do these characteristics suggest about life and the world that we live in? In other words, what can carnivorous plants teach us about the world?? Make a point and support it with an example from the text. Explain what your support shows.

The number of passes completed by Brett Favre, quarterback for the Green Bay Packers, was recorded for each of the 16 regular season games in the fall of 2006 (www.espn.com). 15 31 25 22 22 19 17 28 24 5 22 24 22 20 26 21 a. Draw a stem and leaf plot to describe the data. b. Calculate the mean and standard deviation for Brett Favre’s per game pass completions. c. What proportion of the measurements lie within two standard deviations of the mean? 2

Answers

The mean and standard deviation for Brett Favre's per game pass completions were 21.4 and 6.47, respectively, and all measurements fall within two standard deviations of the mean.

What is standard deviation ?

Standard deviation is a measure of the amount of variation or dispersion in a set of data. It is a statistic that indicates how much the individual data points deviate from the mean or average of the dataset.

a. Here's a stem-and-leaf plot for the number of passes completed by Brett Favre for each of the 16 regular season games in the fall of 2006:

     

Each stem represents the tens digit of the number of passes completed, and each leaf represents the ones digit.

b. To calculate the mean and standard deviation for Brett Favre's per game pass completions, we can use the following formulas:

mean = (sum of all values) / (number of values)

standard deviation = sqrt[(sum of (each value minus the mean) squared) / (number of values - 1)]

Using these formulas, we get:

mean = (15 + 31 + 25 + 22 + 22 + 19 + 17 + 28 + 24 + 5 + 22 + 24 + 22 + 20 + 26 + 21) / 16 = 21.4

standard deviation = [tex]sqrt[((15-21.4)^2 + (31-21.4)^2 + (25-21.4)^2 + (22-21.4)^2 + (22-21.4)^2 + (19-21.4)^2 + (17-21.4)^2 + (28-21.4)^2 + (24-21.4)^2 + (5-21.4)^2 + (22-21.4)^2 + (24-21.4)^2 + (22-21.4)^2 + (20-21.4)^2 + (26-21.4)^2 + (21-21.4)^2) / (16-1)] = 6.47 \\ \\= 6.47[/tex] (rounded to two decimal places)

Therefore, Brett Favre's per game pass completions had a mean of 21.4 and a standard deviation of 6.47.

c. To find the proportion of the measurements that lie within two standard deviations of the mean, we need to find the range of values that fall within two standard deviations above and below the mean. We can use the following formula:

range = mean ± (2 × standard deviation)

Plugging in the values we calculated in part b, we get:

range = 21.4 ± (2 × 6.47) = 8.46 to 34.34

Therefore, the mean and standard deviation for Brett Favre's per game pass completions were 21.4 and 6.47, respectively, and all measurements fall within two standard deviations of the mean.

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ncluding zero) depending on your answer.
Match each system on the left with all words that describe the system
on the right. Choices on the right can be used more than once.
y=2x+3
x+y=-3

3y=9x-6
2y-6x=4

y=1/2x +2
x+2y=4

inconsistent
consistent
independent
dependent

Answers

By rewriting the 3 given systems, we will see that:

1) Independent and consistent.

2) Independent and inconsistent.

3) Dependent.

What is the system of equations?

A finite set of equations for which common solutions are sought is referred to as a set of simultaneous equations, often known as a system of equations or an equation system.

Let's look at the first one, we can rewrite it as:

y = 2x + 3

y = -x - 3

So, the slopes are different, meaning that we have one solution, so this system is consistent and independent.

Now let's look at the second system, we can rewrite it as:

y = 3x - 2

y = 3x + 2

Here both lines have the same slope, so the lines never do intersect, meaning that the system is inconsistent and independent.

For the final system, we have:

y = (-1/2)×x + 2

y = (-1/2)×x + 2

Hence, we have two equal lines, so this system is dependent.

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The point P(0,9) is on the graph of the function y = ( 3 - 2x ) ^2. Find the slope of the secant line PQ, where Q is the point on the graph corresponding to x = 0.1 .

Answers

The slope of the secant line  PQ is -11.6

What is slope of the secant line PQ

To find the slope of the secant line PQ, we need to find the coordinates of point Q, and then calculate the slope using the formula:

slope of PQ = (yQ - yP)/(xQ - xP)

where (xP, yP) = (0, 9) and (xQ, yQ) = (0.1, y(0.1)).

First, we need to find y(0.1) by substituting x = 0.1 into the equation y = (3 - 2x)^2:

y(0.1) = (3 - 2(0.1))^2 = (2.8)^2 = 7.84

Therefore, point Q is (0.1, 7.84).

Now we can calculate the slope of PQ:

slope of PQ = (yQ - yP)/(xQ - xP) = (7.84 - 9)/(0.1 - 0) = -11.6

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I need immediate help!!

Answers

Answer:

First: P, R. Second: 3.

Step-by-step explanation:

In this, you can see the first tree diagram with C,R C,B and C,W.

Then when you go to the other diagram it's P,R P,B and P,W.

Therefore the combination P,R is missing from the tree diagram and belongs to the box.

When you count the number of combinations:

1, P,R

2, P,B

3, P,W

Therefore they are a total of 3 combinations.

What are the coordinates of each point after the quadrilateral RSTU is rotated 90 degrees about the origin?



Answers

After the rotation, the coordinates of each point will be:Point R: (x,y) = (-y,x)Point S: (x,y) = (-x,-y)Point T: (x,y) = (y,-x)Point U: (x,y) = (x,y)

What is coordinates?

Coordinates are a set of two or more numbers or variables that indicate the position of a point, line, or object in space. Coordinates are used in many fields, from mathematics and science to navigation and cartography. Coordinates are essential for accurately mapping and measuring the location of objects on Earth and in the universe. Coordinates can also be used to calculate the area of a region or the volume of an object. Coordinates are one of the most important tools for understanding and manipulating the physical world.

Quadrilateral RSTU has a rotation of 90 degrees about the origin. After the rotation, the coordinates of each point will be:

Point R: (x,y) = (-y,x)
Point S: (x,y) = (-x,-y)
Point T: (x,y) = (y,-x)
Point U: (x,y) = (x,y)

This occurs because when rotating a point around the origin, the x-coordinates and y-coordinates change places. The sign also changes for the x-coordinate and the y-coordinate in order to preserve the direction of the rotation.

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Use the figure below to answer the questions

Solve for X

Answers

The measure of angle x in the hexagon is 140 degree.

What is the measure of angle x?

The formula for calculating the sum of interior angles of a polygon is ( n − 2 ) × 180 degree.

where is the number of sides

Since the number of sides of the polygon in the diagram is 6, we can find the sum of the interior angle.

Sum of interior angle = ( n − 2 ) × 180

Plug in n = 6

Sum of interior angle = ( 6 − 2 ) × 180

Sum of interior angle = ( 4 ) × 180

Sum of interior angle = 720°

Next, we sum up the interior angles given in the diagram equate to 720 degree and solve for x.

108 + 155 + 123 + 104 + 90 + x = 720

Collect and add like terms

580 + x = 720

Subtract 580 from both sides

580 - 580 + x = 720 - 580

x = 720 - 580

x = 140°

Therefore, the value of x is 140 degree.

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NO LINKS!! URGENT HELP PLEASE!!!!


Please help me with #1 - 3


For each table, state if the model is linear or exponential and write an equation.

Answers

Answers:

Linear; equation is   y = -5x+15Linear; equation is    y = -x+4Exponential;  equation is   y = 80*2^x

=====================================================

Explanation:

Problem 1

Each time x goes up by 1, y goes down by 5. This constant rate of change leads to the equation being linear. The slope is m = -5/1 = -5. You can use the slope formula for any two points in the table to confirm this is the correct slope.

The y intercept is b = 15 because we have x = 0 lead to y = 15.

Therefore, we go from y = mx+b to y = -5x+15

-----------------------------------

Problem 2

Each time x goes up by 3, the y coordinate goes down by 3. Therefore, we have another linear equation here. The slope is m = -3/3 = -1.

The y intercept is b = 4 because x = 0 leads to y = 4.

y = mx+b turns into y = -x+4

-----------------------------------

Problem 3

Each time x goes up by 1, y is NOT going up the same amount. The jump from 10 to 20 is +10. The jump from 20 to 40 is +20. And so on.

Therefore, this equation isn't linear. Instead it's exponential. Each y term doubles when x increases by 1, so that's why the b term is b = 2.

The initial term is a = 80 because x = 0 leads to y = 80.

We go from y = a*b^x to y = 80*2^x

-----------------------------------

You can use a tool like Desmos or GeoGebra to visually confirm each of the answers. Both also offer support for function tables.

Answer:

1.  y = -5x + 15.

2. y = -x + 4.

3. y = 80(2^(x/3))

Step-by-step explanation:

1.

From the given data, we can see that as x increases by 1, y decreases by a fixed amount of 5. This means that the relationship between x and y is linear, specifically a decreasing linear relationship.

To write the equation for a linear relationship, we need to find the slope (m) and y-intercept (b).

Using the formula for slope:

m = (change in y) / (change in x)

m = (0 - 30) / (3 - (-3))

m = -5

Using the point-slope form of a linear equation:

y - y1 = m(x - x1)

y - 30 = -5(x - (-3))

y - 30 = -5x - 15

y = -5x + 15

So the equation for this linear relationship is y = -5x + 15.

2.

From the given data, we can see that as x increases by 3, y decreases by a fixed amount of 3. This means that the relationship between x and y is linear, specifically a decreasing linear relationship.

To write the equation for a linear relationship, we need to find the slope (m) and y-intercept (b).

Using the formula for slope:

m = (change in y) / (change in x)

m = (-5 - 13) / (9 - (-9))

m = -18 / 18

m = -1

Using the point-slope form of a linear equation:

y - y1 = m(x - x1)

y - 13 = -1(x - (-9))

y - 13 = -1(x + 9)

y = -x + 4

So the equation for this linear relationship is y = -x + 4.

3.

From the given data, we can see that as x increases by 1, y doubles. This means that the relationship between x and y is exponential.

To write the equation for an exponential relationship, we can use the general form of an exponential function:

y = ab^x

where a is the initial value, b is the base, and x is the exponent.

To find a and b, we can use the first and fourth data points since they have the smallest and largest values of y, respectively.

When x = -3, y = 10, so we have:

10 = ab^(-3)

When x = 0, y = 80, so we have:

80 = ab^(0)

From the second equation, we can see that a = 80. Substituting this into the first equation, we get:

10 = 80b^(-3)

Simplifying, we get:

b = 2^(1/3)

So the equation for this exponential relationship is:

y = 80(2^(1/3))^x

Simplifying further:

y = 80(2^(x/3))

Andrew is building a gate in his fence in the shape of a trapezoid.

What is the area of the gate?

Answers

ANSWER: 16FT  

SOLUTION IN IMAGES

Can someone please help me with this math problem, ASAP?

Answers

The value of the given function for x=4 is 82.

What is the function?

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

The given function is y+√x=5x+(x+4)².

Here, y=5x+(x+4)²-√x

f(x)=5x+(x+4)²-√x

Substitute x=4 in the function, we get

f(4)=5(4)+(4+4)²-√4

= 20+64-2

= 82

Therefore, the value of function is 82.

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Jazz Corporation owns 10% of the Williams Corp. stock. Williams distributed a $23,000 dividend to Jazz Corporation. Jazz Corp.'s taxable income (loss) before the dividend was ($3,300). What is the amount of Jazz's dividends received deduction on the dividend it received from Williams Corp.?

Answers

The DRD for Jazz Corporation on the dividend it received from Williams Corp. is $4,000.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

To calculate the dividends received deduction (DRD) for Jazz Corporation on the dividend it received from Williams Corp., we need to determine the taxable income limit for the deduction.

The taxable income limit is based on the percentage of ownership in the company. Since Jazz Corporation owns 10% of Williams Corp. stock, the taxable income limit is 50% of its taxable income, or $4,000 ($8,000 x 50%).

The DRD is then calculated as the lesser of the dividend received or the taxable income limit. In this case, Jazz Corporation received a dividend of $12,900, which exceeds the taxable income limit of $4,000.

Therefore, the DRD for Jazz Corporation on the dividend it received from Williams Corp. is $4,000.

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What are the domain and range of the function graphed below?

Answers

The domain is the set of all x-values greater than or equal to 1, and the range is the set of all y-values greater than or equal to -2.

What is a coordinate plane?

A coordinate plane is a two-dimensional graph that is used to locate points in a given space. The two axes intersect at a point called the origin, which is located at the coordinates (0, 0). Points on the coordinate plane can be labeled using their x and y coordinates, which are written in the form (x, y).

The graph below shows a function in the coordinate plane, which is made up of a curved line that begins at the point (1, -2) and rises as it moves to the right. The domain of the function is all x-values, or inputs, which are greater than or equal to 1. The range of the function is all y-values, or outputs, which are greater than or equal to -2.

When determining the domain and range of a function, it is important to remember that the domain is the set of all possible inputs, while the range is the set of all possible outputs. In the case of the graph below, the domain is the set of all x-values greater than or equal to 1, and the range is the set of all y-values greater than or equal to -2.

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