Please help with this equation I’ll give brainliest

Please Help With This Equation Ill Give Brainliest

Answers

Answer 1

Answer:

a. A linear equation would best represent the total cost a shopper will pay for an order.

b. y = .7x + 5 would model this situation.


Related Questions

Find the missing side lengths. Leave your answers as radicals in simplest form

Answers

Answer:

x = 2;

y = 3

Step-by-step explanation:

Use trigonometry:

[tex] \tan(60°) = \frac{y}{1} [/tex]

Cross-multiply to find y:

[tex]y = 1 \times \tan(60°) = 1 \times \sqrt{3} = \sqrt{3} [/tex]

Use the Pythagorean theorem to find x:

[tex] {x}^{2} = {y}^{2} + {1}^{2} [/tex]

[tex] {x}^{2} = ( { \sqrt{3}) }^{2} + {1}^{2} = 3 + 1 = 4[/tex]

[tex]x > 0[/tex]

[tex]x = \sqrt{4} = 2[/tex]

please help thank you very much

Answers

Answer:5

Step-by-step explanation:

What is the value of x?



Enter your answer in the box.

x =

Answers

Answer:

x = 4

Step-by-step explanation:

In order to find x, we will either have to find the length QT or RT.

In triangle RST, the length RS is given so we can either length RT or ST. However, if we find the length RT, we can find the value of x.

sin Θ = [tex]\frac{opp}{hyp}[/tex]

sin 60° = [tex]\frac{2\sqrt{3} }{RT}[/tex]

RT = [tex]\frac{2\sqrt{3}}{sin 60}[/tex] = 4

tan Θ = [tex]\frac{opp}{adj}[/tex]

tan 45° = [tex]\frac{x}{4}[/tex]

x = tan 45° × 4 = 4

Change into passive voice a. They bring food for us.


Answers

Answer:

Food is brought for us by them.

Answer:

Food is brought for us by them.

Step-by-step explanation:

Whats the value of x?

Answers

Answer:

x = 25

Step-by-step explanation:

By the angle sum property,

2x + 2 + 5x + 3 = 180

7x + 5 = 180

7x = 175

x = 25

Pls like and mark as brainliest!

Answer:

x = 25

Step-by-step explanation:

2x + 2 + 5x + 3 = 180

7x + 5 = 180 and 7x=175

7x = 175

x = 25

so x is most  likely the answer

x=25 Give her BRAINLEST for figuring it out first

6. The picture at the right shows the garden in Robert's
yard. He wants to cover the garden with plastic be-
cause of a sudden drop in temperature. How many
square yards of plastic does he need?
12 ft
15 ft
9 ft

Answers

Answer:

To determine the area of the garden that needs to be covered with plastic, we need to multiply the length by the width of the garden. However, we need to convert the measurements to the same unit of measurement. Let's convert the measurements into yards since we need to find the area in square yards. 12 ft = 4 yards 15 ft = 5 yards 9 ft = 3 yards Now, we can calculate the area: Area = Length x Width Area = 5 yards x 4 yards Area = 20 square yards Therefore, Robert needs 20 square yards of plastic to cover his garden.

Find the slope of a line perpendicular to the line whose equation is 2x + 3y = 24.
Fully simplify your answer.

Answers

The slope of a line perpendicular to [tex]2x + 3y = 24[/tex] is 3/2

What is Equation?

An equation is a statement that two expressions are equal. It contains one or more variables and may also contain constants, coefficients, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation.

To find the slope of a line perpendicular to the line whose equation is [tex]2x + 3y = 24[/tex], we need to first find the slope of the given line.

We can rearrange the equation into slope-intercept form (y = mx + b) by solving for y:

[tex]2x + 3y = 24[/tex]

[tex]3y = -2x + 24[/tex]

[tex]y = \huge \text(-\dfrac{2}{3}\huge \text )x + 8[/tex]

So the slope of the given line is -2/3.

A line perpendicular to this line will have a slope that is the negative reciprocal of -2/3.

The negative reciprocal of a number is the number flipped upside down and then negated. So the negative reciprocal of -2/3 is:

[tex]-1 \div \huge \text(-\dfrac{2}{3}\huge \text )=\dfrac{3}{2}[/tex]

Therefore, the slope of a line perpendicular to [tex]2x + 3y = 24[/tex] is 3/2

To learn more about Equation from given link.

https://brainly.com/question/28243079

How much will you owe at the end of 10 years and a month, if you decide to pay your yearly bonus at the end of each year toward reducing your outstanding loan amount for a loan with the following details? Loan amount PV $320,000 Rate of interest APR 4.750% p. y. c. w. Loan term NPER 15 years Bonus payment at end of each year $4,500 Group of answer choices $21,619.43 $41,033.68 $58,527.87 $74,315.75

Answers

The correct option is $58,527.87

To solve this problem

Using the loan details and bonus payment provided, the remaining balance on the loan at the end of 10 years and a month can be calculated as follows:

Number of payments made = 10 years * 12 months/year + 1 month = 121

Monthly interest rate = 4.75% / 12 = 0.3958%

Yearly bonus payment = $4,500

Using the PMT function in Excel, the monthly payment on the loan can be calculated as:

PMT(0.003958, 15*12, 320000) = -$2,378.03

Since the bonus payment is made once a year, it can be applied as a lump sum to the remaining balance at the end of each year. Therefore, the remaining balance after 10 years and a month can be calculated as:

Remaining balance = PV(0.003958, 5*12, -2378.03, 0, 0) - 4500

where PV is the present value function.

Solving this equation yields:

Remaining balance = $58,527.87

Therefore, the answer is $58,527.87.

Learn more about monthly payment here : brainly.com/question/27926261

#SPJ1

Use the points (8, 12,800) and (14, 14,420) to enter and interpret the equation of the line of fit in slope-intercept form. y=
The cost of raising a child increases $ each year. The cost of raising a child from birth to age 1 is $ If the trend continues, what will be the approximate annual cost of raising a child born in 2013 at age 17? about $​

Answers

the approximate annual cost of raising a child born in 2013 at age 17 is about $15,050, assuming that the trend of increasing cost per year continues. we first need to calculate the slope (m) and the y-intercept (b)

what do you mean by approximate ?

Approximate means "close to but not exactly" or "an estimate". In other words, an approximate value is a value that is not exact but is close enough to the actual value to be useful or meaningful in a given context.

In the given question,

To find the equation of the line of fit in slope-intercept form, we first need to calculate the slope (m) and the y-intercept (b) using the two given points (8, 12,800) and (14, 14,420).

m = (y₂ - y₁) / (x₂ - x₁)

m = (14,420 - 12,800) / (14 - 8)

m = 1,620 / 6

m = 270

b = y - mx

b = 12,800 - 270(8)

b = 10,940

Therefore, the equation of the line of fit in slope-intercept form is:

y = mx + b

y = 270x + 10,940

To use this equation to estimate the cost of raising a child born in 2013 at age 17, we can plug in x = 17 and solve for y:

y = 270x + 10,940

y = 270(17) + 10,940

y = 15,050

Therefore, the approximate annual cost of raising a child born in 2013 at age 17 is about $15,050, assuming that the trend of increasing cost per year continues.

To know more about  slope , visit:

https://brainly.com/question/3605446

#SPJ1

if x+2 is a factor of x^3-6x-11x+k, then k=

Answers

The value of k in the expression x³ – 6x² – 11x + k is –10.

What is polynomials?

Polynomial is formed up of the terms Nominal, which means "terms," and Poly, which means "many." A polynomial is a mathematical expression made up of variables, constants, and exponents that are mixed using addition, subtraction, multiplication, and division operations.

From the question given above, the following data were obtained:

f(x) = x³ – 6x² – 11x + k

Factor => x + 2

Value of k =?

Next, we shall obtained the value of x from x + 2. This can be obtained as follow:

x + 2 = 0

Collect like terms

x = 0 – 2

x = –2

Finally, we shall determine the the value of k. This can be obtained as  illustrated below:

f(x) = x³ – 6x² – 11x + k

x = –2

Value of k =?  

f(–2) = 0 since x + 2 is a factor

x³ – 6x² – 11x + k = 0

(–2)³ – (–2)² – 11(–2) + k = 0

–8 – (4) + 22 + K = 0

–8 – 4 + 22 + K = 0

10 + k = 0

Collect like terms

k = 0 – 10

k = –10

Therefore, the value of k is –10

Learn more about polynomial on:

brainly.com/question/13587979

#SPJ9

To determine how far a boat is from shore, two radar stations 590
feet apart find the angles out to the boat, as shown in the figure below. Determine the distance of the boat from station A and the distance of the boat from shore. Round your answers to the nearest whole foot.
Distance to station A:
Distance to the shore:

Answers

A boat's distance from the coast is measured from station A, where the angle is [tex]50[/tex] degrees, and the shore lies [tex]868[/tex] feet away.

Class 6 distance: what is it?

A scalar number known as distance measures "how so much ground an item has traversed" while moving. A vector quantity called displacement describes how far an item is out of place.

What does length vs. distance mean in physics?

A segment's or a room's dimensions are examples of things that may be measured in terms of length. Distance is the separation between two things, like two major cities or 2 points. There will never be a zero sign for either length or distance.

Let Ø be the third angle in the triangle.  Ø=180°-70°-60°=180°-130°=50°

Since we now have an angle and its opposite side, the Law of Sines can be used to find the lengths of other sides.  Let [tex]X[/tex] be the distance from the boat to station A, then

590/sin(Ø)=X/sin(°70)

X=590[sin(70°)/sin(50°)]=868 ft

Distance boat to shore=868sin(70°)[tex]=868 ft[/tex]

To know more about distance visit:

https://brainly.com/question/30325351

#SPJ1

FIRST CORRECT ANSWER GETS BRANLIEST


Adele and her brother ran a race. Adele reached the finish line in 37.45 seconds and her brother reached the finish line 2.1 seconds later. How long did it take Adele's brother to run the race?

Answers

Answer:

It took Adele's brother 37.45 + 2.10 = 39.55 seconds to run the race.

Let f(x) = (x + 3)(x + 4) and g(x) = 1 3 (x + 3)(x − 4). The graphs of each are shown below.
Which graph represents which polynomial function? Explain how you can determine this without
using graphing software

Answers

Answer: We can determine which graph represents which polynomial function by analyzing the factors of each function.

First, let's consider f(x) = (x + 3)(x + 4). The factors are (x + 3) and (x + 4). When we multiply these factors together, we get a quadratic polynomial with a positive leading coefficient. This means that the graph of f(x) will be a parabola that opens upward.

Next, let's consider g(x) = 1/3(x + 3)(x − 4). The factors are (x + 3) and (x - 4). When we multiply these factors together and simplify, we get a quadratic polynomial with a leading coefficient of 1/3. This means that the graph of g(x) will also be a parabola that opens upward, but it will be narrower than the graph of f(x).

Based on this analysis, we can determine that the graph of f(x) corresponds to the wider parabola, and the graph of g(x) corresponds to the narrower parabola. We can also determine this without using graphing software by noting that f(x) has roots at x = -3 and x = -4, while g(x) has roots at x = -3 and x = 4. The graph of f(x) must therefore intersect the x-axis at -3 and -4, while the graph of g(x) must intersect the x-axis at -3 and 4. By examining the graphs, we can see that the wider parabola intersects the x-axis at -3 and -4, so it corresponds to f(x), while the narrower parabola intersects the x-axis at -3 and 4, so it corresponds to g(x).

Step-by-step explanation:

10. Substitute for A, P and T in the formula A = P(1 + r), given that A = 1 000 000, P = 10 000 and T = 2, and express as a quadratic equation.​

Answers

Answer:

Step-by-step explanation:Let's first substitute the values of A, P, and T in the formula A = P(1 + r)^T.

Given: A = 1,000,000; P = 10,000; T = 2

1,000,000 = 10,000(1 + r)^2

Now let's express it as a quadratic equation. First, divide both sides by 10,000:

100 = (1 + r)^2

Next, expand the square:

100 = 1 + 2r + r^2

Finally, rearrange to form the quadratic equation:

r^2 + 2r - 99 = 0

Final answer:

To represent the formula A = P(1 + r) as a quadratic equation with the given values, we substitute A = 1,000,000, P = 10,000, and T = 2. The resulting equation is 10,000r - 9,000,000 = 0.

Explanation:

To express the formula A = P(1 + r) as a quadratic equation, we substitute the given values for A, P, and T.

Given:

A = 1,000,000P = 10,000T = 2

Substituting these values into the formula:

1,000,000 = 10,000(1 + r)

To express this equation as a quadratic form, we can expand the parentheses:

1,000,000 = 10,000 + 10,000r

Now, let's move all the terms to one side to form a quadratic equation:

10,000r - 9,000,000 = 0

Therefore, the quadratic equation that represents A = P(1 + r) with the given values is 10,000r - 9,000,000 = 0.

Learn more about Quadratic equation here:

https://brainly.com/question/26090334

#SPJ2

Simplify the function f(x)=1/2(27) 2x/3 then determine the key aspects of the function

Answers

The simplified form of the function f(x)=1/2(27) 2x/3 can be expressed as f(x) = (27/2) (2x/3).

What is function?

Functions are one of the fundamental building blocks of mathematics and are used to describe and analyze relationships between different variables.

The function f(x)=1/2(27) 2x/3 can be simplified by factoring out the common factor of 1/2 and 27.

Thus, the simplified form of the function can be expressed as

f(x) = (27/2) (2x/3).

This function is a polynomial function with degree 1, which means that it is a linear function. The degree of a function is the highest power of the variable in the equation.

The key aspects of this function can be identified by looking at the constant values in the equation.

The constant value 27/2 is the y-intercept, which is the point at which the line crosses the y-axis.

This means that the y-value of the function at x = 0 is 27/2.

The constant value 2/3 is the gradient, which is the slope of the line. This means that for every increase in the x-value, the y-value will increase by 2/3.

This function can be represented graphically as a straight line with a y-intercept of 27/2 and a slope of 2/3.

The graph of this function will pass through the point (0, 27/2) and will have a positive slope of 2/3. This means that the graph will move up and to the right, with each increase in the x-value resulting in an increase of 2/3 in the y-value.

For more questions related to  slope

https://brainly.com/question/29044610

#SPJ9

Find the perimeter and total area

Answers

Answer:

Perimeter: Add up all the sides (7.5, 6, 2.5, 3.5, 3.5) to get the answer for the perimeter as 23 ft.

Area: Split the shape into two rectangles either way and multiply the length and width. Then, add the two answers. This would leave us with the answer of the area as 35 square feet.

Colton measured the high school and made a scale drawing. The scale he used was 1 centimeter : 2 meters. The parking lot is 88 meters long in real life. How long is the parking lot in the drawing?
centimeters

Answers

The length of the parking lot in the drawing is 44 centimeters.

What is Algebraic expression ?

An algebraic expression is a mathematical phrase that can contain variables, constants, and operators (such as addition, subtraction, multiplication, and division) that are used to represent quantities and their relationships.

Since the scale Colton used is 1 centimeter : 2 meters, this means that for every 2 meters in real life, he drew 1 centimeter in his scale drawing.

To find the length of the parking lot in the drawing, we can set up a proportion:

1 cm / 2 m = x cm / 88 m

where x is the length of the parking lot in the drawing in centimeters.

We can solve for x by cross-multiplying:

1 cm * 88 m = 2 m * x cm

88 cm = 2x

x = 44 cm

Therefore, the length of the parking lot in the drawing is 44 centimeters.

To learn more about Algebraic expression from given link.

brainly.com/question/31238826

#SPJ1

Please help asap!!!

Answers

The exact values of trigonometric functions are, respectively:

sin (u + v) = - 13 /85

tan (u + v) = - 13 / 84

How to find the exact values of trigonometric functions

In this problem we need to determine the exact values of trigonometric functions, this can be done by using trigonometric formulas and relationships between trigonometric functions. We need to use the following expressions:

sin² x + cos² x = 1

sin (u + v) = sin u · cos v + cos u · sin v

tan x = sin x / cos x

tan (u + v) = (tan u + tan v) / (1 - tan u · tan v)

Where x, u, v are measured in radians.

Now we proceed to determine the exact values of each function:

cos u = √[1 - (- 3 / 5)²]

cos u = 4 / 5

sin v = √[1 - (15 / 17)²]

sin v = 8 / 17

sin (u + v) = (- 3 / 5) · (15 / 17) + (4 / 5) · (8 / 17)

sin (u + v) = - 13 /85

tan u = (- 3 / 5) / (4 / 5)

tan u = - 3 / 4

tan v = (8 / 17) / (15 / 17)

tan v = 8 / 15

tan (u + v) = (- 3 / 4 + 8 / 15) / [1 - (- 3 / 4) · (8 / 15)]

tan (u + v) = - 13 / 84

To learn more on trigonometric functions: https://brainly.com/question/30954499

#SPJ1

Find the missing side lengths. Leave your answers as radicals in simplest form.

Answers

Answer:

y = 2;

x = 22

.

Step-by-step explanation:

Use trigonometry:

[tex] \tan(45°) = \frac{y}{2} [/tex]

Use the property of proportion to find x (cross-multiply):

[tex]y = 2 \times \tan(45°) = 2 \times 1 = 2[/tex]

Use the Pythagorean theorem to find x:

[tex] {x}^{2} = {y}^{2} + {2}^{2} [/tex]

[tex] {x}^{2} = {2}^{2} + {2}^{2} = 4 + 4 = 8[/tex]

[tex]x > 0[/tex]

[tex]x = \sqrt{8} = \sqrt{4 \times 2} = 2 \sqrt{2} [/tex]

A small nation of ten people idolizes the TV show “The Voice”. All they produce and consume are karaoke machines and CDs, in the following amounts:





Karaoke Machines

CDs



Quantity Produced

(in thousands)

Price of each Karaoke Machine

Quantity Produced

(in thousands)

Price of each CD



2017

10

$40

30

$10

2018

12

$60

50

$12

The population of the economy is 10000 in 2017 and it increased to 15000 in 2018.Using the CPI, compute the percentage change in the overall price level. Use 2017 as the base year and fix the basket at 1 karaoke machine and 3 CDs.

Answers

To compute the CPI, we first need to calculate the total cost of the basket in both years:

2017: (10 x $40) + (30 x $10) = $400 + $300 = $700

2018: (12 x $60) + (50 x $12) = $720 + $600 = $1320

Using 2017 as the base year, the CPI in 2017 is 100 (by definition). To calculate the CPI in 2018, we divide the cost of the basket in 2018 by the cost of the basket in 2017, and multiply by 100:

CPI in 2018 = (1320/700) x 100 = 188.57

Therefore, the percentage change in the overall price level is:

% change in price level = (CPI in 2018 - CPI in 2017) / CPI in 2017 x 100

% change in price level = (188.57 - 100) / 100 x 100

% change in price level = 88.57%

So, the overall price level increased by 88.57% from 2017 to 2018.

If trapezoid QRST is dilated about the origin by a scaled (k) of 2, what is the resulting coordinate of point T”?

Answers

Using dilation, we can find the coordinates of the new trapezoid and the coordinates of T" is (-6, -4).

Define dilation?

Dilation is the process of increasing an object's size without altering its shape. Depending on the scale-factor, the object's size may increase or shrink. A square of side 5 units can be widened to a square of side 15 units using dilation maths, but the square's shape doesn't change.

In geometry, dilation math is used to enlarge and reduce two- or three-dimensional figures.

Here in the question,

The coordinates of point T = (-3, -2)

Now, the trapezoid is dilated about the origin.

The scale factor here is. k = 2.

The new coordinates of the point T":

x coordinate = -3 × 2 = -6

y coordinate= -2 × 2 = -4

The coordinates of T" = (-6, -4).

To know more about dilation, visit:

https://brainly.com/question/13176891

#SPJ1

Four transformations of the function f (x ) = 2x are given below. For each transformation, drag the expression that shows the result of that transformation into the box under it.

Answers

For the four transformations based on f(x)= [tex]2^{x}[/tex],

1)6f(x)= 6 [tex]2^{x}[/tex]

2)f(6x)= [tex]2^{6x}[/tex]

3)f(x+6)=[tex]2^{x+6}[/tex]

4)f(x)+6 =  [tex]2^{x}[/tex]+6

What are transformations?

Transformations in any given function is changing its original form to nre form by flipping, rotating, shifting, enlarging and compressing the function. We can move the given function up or down as per the given conditions by adding up or subtracting the constant in y axis. We can move the given function left or right as per the given conditions by adding up or subtracting the constant in x axis. We can stretch or compress the function about x or y axes. Also we can also flip,reverse the function, reflect about axes or enlarge the functions.

Here given that function f(x)= [tex]2^{x}[/tex]

From the given graph we can identify few points for the given function:

(-1,0.5); (0,1); (1,2); (2,4); (3,8); (4,16); (5,32); (6,64) and so on.

Now to identify the transformations, we can substitute the tranformed value of x in the function:

1)6 f(x) = 6 .  [tex]2^{x}[/tex] {as we know that f(x)= [tex]2^{x}[/tex]}

∴6 f(x) will be equal to 6 .  [tex]2^{x}[/tex]

2)f(6x) : for this we can replace 'x' by '6x'

f(6x) =  [tex]2^{6x}[/tex]

3)f(x+6): for this function replace 'x' by 'x+6'

f(x+6)=[tex]2^{x+6}[/tex]

4)f(x)+6 : substitute f(x)= [tex]2^{x}[/tex], we get

f(x)+6 =  [tex]2^{x}[/tex]+6

To know more about transformations, visit:

https://brainly.com/question/29788009

#SPJ1

Light travels 1.8x10^7 kilometers in one minute. How far does it travel in 6 minutes?

Answers

In one minute, light travels 1.8x10^7 kilometers. Therefore, in 6 minutes, it will travel:

1.8x10^7 km/minute * 6 minutes = 1.08x10^8 kilometers

So, light will travel 1.08x10^8 kilometers in 6 minutes.
Light travels 1.8x10^7 kilometers in one minute. In 6 minutes, it travels 1.8x10^7 x 6 = 1.08x10^8 kilometers.

1.08x10^8 kilometers is equal to 108,000,000 kilometers.

The combined city/highway fuel economy of a 2016 Toyota 4runner 2wd 6-cylinder 4-L automatic 5-speed using regular gas is a normally distributed random variable with a range of 21mpg to 26mpg answer A and B URGENT

Answers

a)The range of 95% of the data is from 21 mpg to 26 mpg, which is a range of 5 mpg.

b)We need a sample size of 543 to estimate the mean with 98% confidence and an error of 0.25 mpg

What is Empirical Rule for a normal distribution?

If a dataset is normally distributed, we can expect that about 68% of the data points will fall within one standard deviation of the mean, about 95% of the data points will fall within two standard deviations of the mean, and about 99.7% of the data points will fall within three standard deviations of the mean. This rule is a useful guideline for understanding the spread of data in a normal distribution.

(a) Using Method 3 (the Empirical Rule for a normal distribution), we know that for a normally distributed random variable, approximately 68% of the data falls within one standard deviation of the mean, 95% of the data falls within two standard deviations of the mean, and 99.7% of the data falls within three standard deviations of the mean.

Since the range of the combined city/highway fuel economy of a 2016 Toyota 4Runner 2WD 6-cylinder 4-L automatic 5-speed using regular gas is from 21 mpg to 26 mpg, the midpoint of the range is (21 + 26) / 2 = 23.5 mpg.

Using the Empirical rule, we know that approximately 95% of the data falls within two standard deviations of the mean. Therefore, the range of 95% of the data is from 21 mpg to 26 mpg, which is a range of 5 mpg.

We can set up the following equation to solve for the standard deviation, σ:

2σ = 5

σ = 5 / 2

σ = 2.5

Therefore, the estimated standard deviation is 2.5 mpg. Rounded to 4 decimal places, the estimated standard deviation is 2.5000 mpg.

(b) The formula for the margin of error is:

Margin of error = z-value×(standard deviation / √(sample size))

We want the margin of error to be 0.25 mpg and the confidence level to be 98%. Since we are using a z-value, we can look up the z-value for a 98% confidence level in a standard normal distribution table.

The z-value for a 98% confidence level is approximately 2.33 when rounded to 3 decimal places.

Plugging in the given values, we have:

0.25 = 2.33×(2.5 / √(sample size))

Solving for the sample size, we get:

√(sample size) = 2.33 × (2.5 / 0.25)

√(sample size) = 23.3

sample size = (23.3)²

sample size = 542.89

Rounded to the nearest whole number, we need a sample size of 543 to estimate the mean with 98% confidence and an error of 0.25 mpg.

Learn more about distribution here,

https://brainly.com/question/4079902

#SPJ1

Suppose a random sample of 80 measurements is selected from a population with a mean of 25 and a variance of 200. Select the pair that is the mean and standard error of x. Rstudio
a) [25, 2.081]
b) [25, 1.981]
c) [25, 1.681]
d) [25, 1.581]
e) [80, 1.681]

Answers

[ 25 , 1.581 ] is the pair that is the mean and standard error of x.

What does standard error mean?

A statistical concept known as the standard error uses standard deviation to assess how well a sample distribution represents a population.

                            The standard error of the mean describes the statistical variation between a sample mean and the population's actual mean. Measures of variability include standard error and standard deviation: The standard deviation describes variation within a single sample.

 n = 80

 μ = 25

 σ² = 200

mean of x =  μ  = 25

 standard error = √ σ²/n

                        = √200/80

                         = 1.581

                         = [ 25 , 1.581 ]

Learn more about standard error

brainly.com/question/13179711

#SPJ1

Given sinx=3/5 and is in quadrant 2, what is the value of tan x/2 ?

Answers

Answer:

[tex]\tan \left(\dfrac{x}{2}\right)=3[/tex]

Step-by-step explanation:

Trigonometric ratios are the ratios of the sides of a right triangle.

[tex]\boxed{\begin{minipage}{9.4 cm}\underline{Trigonometric ratios} \\\\$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$\\\\where:\\ \phantom{ww}$\bullet$ $\theta$ is the angle. \\ \phantom{ww}$\bullet$ $\sf O$ is the side opposite the angle. \\\phantom{ww}$\bullet$ $\sf A$ is the side adjacent the angle. \\\phantom{ww}$\bullet$ $\sf H$ is the hypotenuse (the side opposite the right angle). \\\end{minipage}}[/tex]

The sine trigonometric ratio is the ratio of the side opposite the angle to the hypotenuse.

Given sin(x) = 3/5, the side opposite angle x is 3, and the hypotenuse is 5.

As we have two sides of the right triangle, we can calculate the third side (the side adjacent the angle) using Pythagoras Theorem.

[tex]\boxed{\begin{minipage}{9 cm}\underline{Pythagoras Theorem} \\\\$a^2+b^2=c^2$\\\\where:\\ \phantom{ww}$\bullet$ $a$ and $b$ are the legs of the right triangle. \\ \phantom{ww}$\bullet$ $c$ is the hypotenuse (longest side) of the right triangle.\\\end{minipage}}[/tex]

Therefore:

[tex]\implies A^2+3^2=5^2[/tex]

[tex]\implies A^2+9=25[/tex]

[tex]\implies A^2+9-9=25-9[/tex]

[tex]\implies A^2=16[/tex]

[tex]\implies \sqrt{A^2}=\sqrt{16}[/tex]

[tex]\implies A=4[/tex]

Use the cosine trigonometric ratio to find the value of cos(x), remembering that cosine is negative in Quadrant II.

[tex]\implies \cos x=-\dfrac{4}{5}[/tex]

Now we have the values of sin(x) and cos(x) in Quadrant II, we can use the tangent half angle formula to find the value of tan(x/2).

[tex]\begin{aligned}\implies \tan \left(\dfrac{x}{2}\right)&=\dfrac{\sin x}{1+\cos x}\\\\&=\dfrac{\frac{3}{5}}{1-\frac{4}{5}}\\\\&=\dfrac{\frac{3}{5}}{\frac{1}{5}}\\\\&=\dfrac{3}{5} \cdot \frac{5}{1}\\\\&=3\end{aligned}[/tex]

Therefore, the value of tan(x/2) is 3.

The height above the ground in feet of a football thrown into the air from the balcony of a house is -12t + 20t + 30, where t is the time in seconds since the ball was thrown. How high above the ground is the balcony?

Answers

Answer: The height above the ground in feet of a football thrown into the air from the balcony of a house is given by the expression:

h(t) = -12t^2 + 20t + 30

where t is the time in seconds since the ball was thrown.

To find the height of the balcony above the ground, we need to determine the initial height of the football when it was thrown from the balcony. This initial height corresponds to the value of h(0), since the time elapsed since the throw was zero at that moment.

Therefore, we can substitute t = 0 into the expression for h(t):

h(0) = -12(0)^2 + 20(0) + 30 = 30

This means that the balcony is 30 feet above the ground.

Hence, the height of the balcony above the ground is 30 feet.

Step-by-step explanation:

Use trigonometric ratios to find the indicated side lengths in the diagram shown. Round your answers to the nearest tenth.



x = _____ units

y = _____ units

(40 points)

Answers

The indicated side lengths are: x ≈ 13.2 units and y ≈ 11.9 units

What is angle of sin?

the ratio between the side opposite the angle and the hypotenuse of the triangle.

given that a triangle with three sides x, y, 18 and angle opposite to side y is 42°.

then by sine formula, trigonometric ratio for the sine of an angle:

sin(42°) = perpendicular /hypotenuse = y/18

y = 18 sin(42°), we find that y ≈ 11.9 units (rounded to the nearest tenth).

To find x,  the cosine of an angle:

cos(42°) =base /hypotenuse=x/18

x = 18 cos(42°)

we find that x ≈ 13.2 units (rounded to the nearest tenth).

Therefore, the indicated side lengths are:

x ≈ 13.2 units

y ≈ 11.9 units

know more about trigonometry visit:

brainly.com/question/29002217

#SPJ1

single-cell of bacteria triples every 3 days. About how many days will it take one bacteria to produce a population of 2187?

Answers

Answer:

7 days

Step-by-step explanation:

what is a fraction between 6/7 and 1

Answers

Answer:

brainly

Search...

sandhyamahilane1116

24.02.2021

Math

Secondary School

answered • expert verified

What is a fraction between 6/7 and 1 whole?

Unlocked badge showing an astronaut’s boot touching down on the moon

See what the community says and unlock a badge.

Log in to add comment

Advertisment

Expert-Verified Answer

2 people found it helpful

author link

amitnrw

Genius

40.2K answers

761.8M people helped

Given : 6/7 and 1 whole

To Find : a fraction between 6/7 and 1 whole

Solution:

There exist Infinitely many rational between two different rational numbers

There can be Different ways to find rational number in between two number

one way is to find mean of number

= (6/7 + 1)/2

= 13/14

13/14 is a fraction between 6/7 and 1 whole

6/7 = 18/21

1 = 21/21

19/21 , 20/21 are fraction between 6/7 andfraction

Other Questions
Lucie a effectue le calcul : 23527=6 345Donner le rsulta des produit suivants.a.23.5 27 b.23.52.7 c.2.350.27 a fruit stand marketer has gathered marketing information about a rival fruit stand by reading their advertisements, checking out their website, and looking at what other similar fruit stands have opened their area. this is known as: Find an for each geometric sequence.a-8r-12, n=9Oa. 1/64Ob. 36Oc. 321Od. 3/2 Suppose the weights of sumo wrestlers are normally distributed with a mean of 330lbs and a standard deviation of 15lbs. An up and coming competitor wants to defeat wrestlers whose weights are in the top 10%. What is the minimum weight of the sumo wrestlers at the highest weight of the league? Round your answer to the nearest whole number, if necessary. in a park, 25 children play every day in the evening. 12 children like to play cricket, 8 like to play football and 4 like to play soccer. how many children in the park do not like to play either cricket or football or soccer? A tree that is 8 tall is growing at a rate of 1 foot each yearA tree that is 10 feet tall is growing at a rate of 1/2 foot each yearHow many years will it take the two trees to reach the same height?Justify your response using mathematics. Mr James works a basic week of 40 hours at a rate of $16 an hour. His overtime rateis $4 per hour MORE than his basic rate.Calculate:(a) his total wage for a basic week,(b) his wage for a week in which he worked 47 hours,(c) the number of hours he worked during one week if he was paid a wage of $860. Topic: Break even (1)Crystal Clear is concerned about the recent rise in the price of aluminium - the metal fromwhich the business make the frames for its greenhouses. This price rise has meant that thefirm's variable costs have risen from 60 to 100 per small greenhouse. Fixed costs and theselling price per unit however, have remained unchanged.Q3Activity: Calculate:a) the percentage change in the firm's variable costs (give your answer to two decimal places)b) the new number of Crystal Clear's smallest greenhouses that would need to be sold permonth for the business to break evenour workings: which formed element can be described as cytoplasmic fragments? pathway of thrombopoiesis. which formed element can be described as cytoplasmic fragments? pathway of thrombopoiesis. platelets megakaryocytes monocytes erythrocytes what kind of consistency is provided by this coloring of the graph (c) cmu cloud computing course full edge vertex Determine the circumcenter of a triangle with vertices at A(2, 4), B(8, 2), and C(4, 2). 2. karen kay, a portfolio manager at colins asset management, is using the capital asset pricing model for making recommendations toher clients. her research department has developed the information shown in the following exhibit. forecast returns, standard deviations, and betas forecast return standard deviation beta stock x stock y market index risk-free rate 14.0% 17.0 14.0 5.0 36%0.8 25 15 15 1.0 a. calculate expected return and alpha for each stock. b. identify and justify which stock would be more appropriate for an investor who wants toi. add this stock to a well-diversified equity portfolio. ii hold this stock as a single-stock portfolio. PLEASE HELP ASAP **WILL GIVE BRAINLIST!!!!!! I'm almost out of time!triangle LMN has vertices L(0,4) and N(8,4). LMN has an area of 16 square units, select all the possible coordinates for M. How to show work for 16 divided by 99.20 How has the thoughts of European colonization of Africa changed over the years Daily High Temperatures. Bob Feller, an Iowa farmer, has recorded the daily high temperatures during the same five-day stretch in May over the past five years. Bob is interested in whether this data suggests that the daily high temperature obeys a normal distribution. Use a = .01 and conduct a goodness of fit test to see whether the following sample appears to have been selected from a normal probability distribution. 55 86 94 58 55 95 55 52 69 95 90 65 87 50 56 55 57 98 58 79 92 62 59 88 65 A cash prize of $3800 is to be awarded at a fundraiser. If 1900 tickets are sold at $4 each, find the expected value. Round your answer to the nearest centThe expected value is dollars. Who brought Ballet over to AmericaO Catherine DunhamO George BalanchineO Lincoln KiertinO King Louis XIV The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped with a mean of 59 ounces and a standard deviation of 6 ounces. Using the Empirical Rule, answer the following questions. Suggestion: Sketch the distribution. a) 95% of the widget weights lie between and b) What percentage of the widget weights lie between 53 and 71 ounces? % c) What percentage of the widget weights lie above 41? % what are the nine basic ways to start a sentence?