PLEASE HELP ME
Given the following quadratic functions, complete the following:
1. Identify the zeros.
2. Identify the vertex.
3. Write the quadratic equation in factored form for the function that is graphed.
Answers
The zeros and vertex of each quadratic equation are:
Case 1: y = 4 · (x + 2) · (x - 2), Roots: - 2, 2, Vertex: (0, - 16)
Case 2: y = (1 / 2) · (x + 5) · (x - 3), Roots: - 5, 3, Vertex: (- 1, - 8)
Case 3: y = - 2 · (x + 4) · (x + 2), Roots: - 4, - 2, Vertex: (- 3, 2)
Case 4: y = - 2 · (x + 6) · (x + 2), Roots: - 6, - 2
Vertex: (- 4, 8)
How to analyze quadratic functions and derive their expressions
Graphically speaking, quadratic functions have the form of the parabola. The zeros are the points of parabola that are on the horizontal axis (x-axis) and the vertex is the only point of the parabola. The factor form of the parabola is:
y = C · (x - r₁) · (x - r₂)
Where:
C - Vertex constantr₁, r₂ - RootsNow we proceed to determine all the features of the quadratic function:
Case 1
Roots: r₁ = - 2, r₂ = 2
Vertex: (h, k) = (0, - 16)
C = y / [(x - r₁) · (x - r₂)]
C = - 16 / [2 · (- 2)]
C = - 16 / (- 4)
C = 4
Factor form: y = 4 · (x + 2) · (x - 2)
Case 2
Roots: r₁ = - 5, r₂ = 3
Vertex: (h, k) = (- 1, - 8)
C = y / [(x - r₁) · (x - r₂)]
C = - 8 / [(- 1 + 5) · (- 1 - 3)]
C = - 8 / [4 · (- 4)]
C = - 8 / (- 16)
C = 1 / 2
Factor form: y = (1 / 2) · (x + 5) · (x - 3)
Case 3
Roots: r₁ = - 4, r₂ = - 2
Vertex: (h, k) = (- 3, 2)
C = y / [(x - r₁) · (x - r₂)]
C = 2 / [(- 3 + 4) · (- 3 + 2)]
C = 2 / [1 · (- 1)]
C = - 2
Factor form: y = - 2 · (x + 4) · (x + 2)
Case 4
Roots: r₁ = - 6, r₂ = - 2
Vertex: (h, k) = (- 4, 8)
C = y / [(x - r₁) · (x - r₂)]
C = 8 / [(- 4 + 6) · (- 4 + 2)]
C = 8 / [2 · (- 2)]
C = 8 / (- 4)
C = - 2
Factor form: y = - 2 · (x + 6) · (x + 2)
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Related Questions
if mFI = 64 degrees and mRS = 180 degrees, find m
Answers
A population is normally distributed with a mean of 56 and a standard deviation of 12.
What is the mean of the sampling distribution for this population?
Answers
The calculated value mean of the sampling distribution for this population is 56
Calculating the mean of the sampling distribution for this population?The mean of the sampling distribution for a population with a normal distribution is equal to the population mean.
Therefore, in this case, the mean of the sampling distribution is also 56.
To understand why this is the case, we can consider the central limit theorem, which states that the sampling distribution of the mean of a random sample from a population with any distribution will be approximately normal if the sample size is large enough.
This means that as the sample size increases, the mean of the sampling distribution approaches the population mean.
Therefore, the mean of the sampling distribution for this population is 56.
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I need help due tomorrow so please help I’ve been trying for a while so can I get some help?
Answers
Answer:
It will be same as angle x because they are on the same line and are alternative angles
So, measurement of angle u will be u=152
Step-by-step explanation:
Hope this helps:)
Good luck
Tom recorded the outdoor temperature for 8 consecutive days. Seven of those temperatures were 71, 80, 69, 80, 73, 77, and 70. The average for all 8 days was 75. What was the temperature on the eighth day?
Answers
Answer:
The temperature on the eighth day is 80.
Step-by-step explanation:
Let t = temperature on the eighth day.
[tex] \frac{71 + 80 + 69 + 80 + 73 +77+ 70 + t}{8} = 75[/tex]
[tex] \frac{520 + t}{8} = 75[/tex]
[tex]520 + t = 600[/tex]
[tex]t = 80[/tex]
Suppose you start with a full tank of gas (14 gallons) in your truck. After driving 5 hours, you now have 5 gallons left. If x is the number of hours you have been driving, then y is the number of gallons left in the tank. At what rate is the gas left in the tank changing? State your answer as a reduced fraction.
Answers
Answer:
We can use the formula for average rate of change to find the rate at which the gas is being used:
average rate of change = (change in y) / (change in x)
where y is the number of gallons left in the tank and x is the number of hours driven.
Substituting the given values, we get:
average rate of change = (5 - 14) / (5 - 0)
Simplifying, we get:
average rate of change = -9/5
Therefore, the rate at which the gas is being used is -9/5 gallons per hour, or -1.8 gallons per hour. This means that the gas in the tank is decreasing at a rate of 1.8 gallons per hour.
find the non permissible replacement for (x ^ 2 + 1)/(2x + 10)
Answers
Reason:
We cannot divide by zero. This means the denominator cannot equal zero. If it was zero, then,
2x+10 = 0
2x = -10
x = -10/2
x = -5
Follow that chain in reverse to see that x = -5 causes the denominator 2x+10 to be zero. This is why we kick -5 out of the domain. Any other x value is valid.
The Revenue and Cost equations for a company are known to be polynomials of order 1 and 2 respectively. It is also known that the graphs of the two equations meet at points A(1,1) and B(5,9) while the third point of the cost function is C(2,0), obtain the following:
a) The Revenue equation and the cost equation
b) What do the common solutions to the two equations signify?
Answers
Answer: a) We know that the Revenue equation is a polynomial of order 1, so we can write it in the form:
R(x) = ax + b
where a and b are constants to be determined. We also know that R(1) = 1 and R(5) = 9, so we have two equations:
a(1) + b = 1
a(5) + b = 9
Solving these equations simultaneously, we get:
a = 2, b = -1
Therefore, the Revenue equation is:
R(x) = 2x - 1
Similarly, the Cost equation is a polynomial of order 2, so we can write it in the form:
C(x) = ax^2 + bx + c
where a, b, and c are constants to be determined. We know that C(1) = R(1) = 1 and C(5) = R(5) = 9, so we have two equations:
a(1)^2 + b(1) + c = 1
a(5)^2 + b(5) + c = 9
We also know that C(2) = 0, so we have a third equation:
a(2)^2 + b(2) + c = 0
Solving these equations simultaneously, we get:
a = 1, b = -4, c = 4
Therefore, the Cost equation is:
C(x) = x^2 - 4x + 4
b) The common solutions to the Revenue and Cost equations represent the production level(s) at which the company makes a profit, since the Revenue equation represents the amount of money the company earns and the Cost equation represents the amount of money the company spends. In other words, the common solutions are the values of x for which R(x) - C(x) > 0. At these production levels, the company's revenue is greater than its cost, resulting in a profit. At production levels where R(x) - C(x) < 0, the company is making a loss. At production levels where R(x) - C(x) = 0, the company is breaking even. Therefore, the common solutions to the two equations signify the production levels at which the company makes a profit or breaks even.
Step-by-step explanation:
help pls, i am struggling
Answers
The correct graph would be the one with a normal distribution curve centered at 0, with two tails shaded on either side, representing the lowest and highest 4% of scores So option C is correct.
What is standard normal distribution ?
The standard normal distribution is a special case of the normal distribution in which the mean is 0 and the standard deviation is 1. It is also known as the "Z-distribution" because the scores are expressed in terms of their z-scores, which are the number of standard deviations above or below the mean.
The standard normal distribution is a bell-shaped curve that is symmetric around the mean of 0. It is used in statistics as a reference distribution for calculating probabilities and making statistical inferences.
To convert a normal distribution with a given mean and standard deviation to a standard normal distribution, we use the formula:
z = (x - μ) / σ
According to the question:
To find the bone density test scores that can be used as cutoff values separating the lowest 4% and highest 4%, we need to find the z-scores that correspond to the 4th and 96th percentiles of the standard normal distribution.
Using a standard normal table, we find that the z-score corresponding to the 4th percentile is approximately -1.75, and the z-score corresponding to the 96th percentile is approximately 1.75.
Therefore, the bone density test scores that can be used as cutoff values separating the lowest 4% and highest 4% are approximately -1.75 and 1.75, respectively.
To sketch the region containing the lowest 4% and highest 4%, we need to shade the area under the normal curve to the left of -1.75 and to the right of 1.75.
The shaded regions represent the lowest 4% and highest 4% of bone density test scores, respectively. The correct graph would be the one with a normal distribution curve centered at 0, with two tails shaded on either side, representing the lowest and highest 4% of scores.
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Increase the number 15/16 by 3/5 of it of it. Then increase the resulting number by 3/5 of it
Answers
The resulting number is 12/5
What are arithmetical operations?Arithmetic operations is a branch of mathematics, that involves the study of numbers, operation of numbers that are useful in all the other branches of mathematics. It basically comprises operations such as Addition, Subtraction, Multiplication and Division.
Given that we need to, increase the number 15/16 by 3/5 of it, then increase the resulting number by 3/5 of it
So, performing the operations,
15/16+15/16×3/5
= 15/16(1+3/5)
= 15/16(8/5)
= 120/80
= 3/2
Now,
3/2+3/2×3/5
= 3/2(1+3/5)
= 3/2(8/5)
= 24/10
= 12/5
Hence, the resulting number is 12/5
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Which equation can be used to find A, the area of the parallelogram shown? A = 5 × 9 A = 4 × 9 A = 12 × 5 × 9 A = 12 × 4 × 9
Which equation can be used to find A, the area - 1
Answers
The area of the parallelogram can be found out by using the equation:
A = 4 × 9 = 36m².
Define area of parallelogram?By multiplying the base with the altitude, one can determine the area of a parallelogram. A parallelogram's base and height are perpendicular to each another.
Area of parallelogram = b × h square units
Now in the question,
Height of parallelogram, h = 4m
base of parallelogram, b = 9m
Area of parallelogram = b × h
= 4 × 9
=36m²
Therefore, the equation A = 4 × 9 can be used to find the area of the parallelogram.
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In 2021, Madison Square Garden employed 8,900 people. For a basketball game at the garden, there are seats for 19,812 fans. What is the number of fans per employee during a basketball game? Round to the nearest tenth.
Answers
Answer:
There are 2.2 fans per employee.
Step-by-step explanation:
19812/8900 = 2.2 Rounded.
Helping in the name of Jesus.
100 POINTSS PLEASEEEE HELP BRAINLIEST
Answers
The missing component in this equation is an alpha particle (He), which has a mass number of 4 and an atomic number of 2. Therefore, the balanced nuclear equation for this alpha decay would be:
^45/20Ca -> ^45/21Sc + ^4/2He
Answer: ^45/20Ca -> ^45/21Sc + ^4/2He
Need help will give brainliest and 5 star rating!
Answers
The polynomial function f(x) which produced the graph shown is f(x) = -6(x - 1/2)²(x + 1)²(x - 2).
What is a polynomial graph?In Mathematics and Geometry, a polynomial graph touches the x-axis at zeros, roots, solutions, x-intercepts, and factors with even multiplicities.
By critically observing the graph of the polynomial function shown above, we can logically deduce that its x-intercepts include the following;
x = -1 ⇒ x + 1 = 0.
x = 2 ⇒ x - 2 = 0.
Also, the graph has a zero of multiplicity 2 at x = 1/2;
x = 1/2 ⇒ x - 1/2 = 0.
(x - 1/2)²
In this context, an equation that represent the polynomial function is given by:
f(x) = a(x - 1/2)²(x + 1)²(x - 2)
By evaluating and solving for the leading coefficient "a" in this polynomial function based on the y-intercept (0, 3), we have;
3 = a(0 - 1/2)²(0 + 1)²(0 - 2)
3 = a(1/4)(-2)
3 = -a/2
a = -6.
Therefore, the required polynomial function is given by:
f(x) = -6(x - 1/2)²(x + 1)²(x - 2)
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14 yd
21 yd find the area of the triangle
Answers
Answer:
147
Step-by-step explanation:
A= h^b b=21*14= 147
11 Sabina travels from London to Telford.
A ticket from London to Telford normally costs £65.25
Sabina gets off the cost of the ticket.
Amir travels by train from London to Coventry and then from Coventry to Telford.
The ticket from London to Coventry costs £23.75
The ticket from Coventry to Telford costs £14.95
Work out the difference between the cost of Sabina's journey and the cost of
Amir's journey.
Answers
"I have to say a lot of people have been asking this question. No, really. A lot of people come up to me and they ask me. They say, 'What's 2+2?' And I tell them look, we know what 2+2 is. We've had almost eight years of the worst kind of math you can imagine. Oh my god, I can't believe it. Addition and subtraction of the 1s the 2s and the 3s. Its terrible. Its just terrible. Look, if you want to know what 2+2 is, do you want to know what 2+2 is? I'll tell you. First of all the number 2, by the way I love the number 2. It's probably my favorite number, no it is my favorite number. You know what, it's probably more like the number two but with a lot of zeros behind it. A lot. If I'm being honest, I mean, if I'm being honest. I like a lot of zeros. Except for Marco Rubio, now he's a zero that I don't like. Though, I probably shouldn't say that. He's a nice guy but he's like, '10101000101', on and on, like that. He's like a computer! You know what I mean? He's like a computer. I don't know. I mean, you know. So, we have all these numbers and we can add them and subtract them and add them. TIMES them even. Did you know that? We can times them OR divide them, they don't tell you that, and I'll tell you, no one is better at the order of operations than me. You wouldn't believe it. That I can tell you. So, we're gonna be the best on 2+2, believe me. OK? Alright. Thank you." Reporter 1: "But what actually is 2+2?" Trump: "Siddown. No, siddown. I've already answered your question. Haven't I already answered your question. This is what we get from news reporters, folks. Give me a nice question. Yes - you." Reporter 2: "Is your name Donald Trump?" Trump: "Now that's a nice question, folks. That's what I want."
The difference between the cost of Sabina's journey and the cost of Amir's journey is -£38.70.
We have,
The cost of Sabina's journey is £65.25.
Since she gets off the cost of the ticket, her journey is free, so the cost is £0.
Amir's journey consists of two segments:
London to Coventry and Coventry to Telford.
The cost of the London to Coventry ticket is £23.75, and the cost of the Coventry to Telford ticket is £14.95.
Difference = Sabina's Journey Cost - Amir's Journey Cost
Difference = £0 - (£23.75 + £14.95)
Difference = £0 - £38.70
Difference = -£38.70
This means that Amir's journey is £38.70 more expensive than Sabina's journey.
Therefore,
The difference between the cost of Sabina's journey and the cost of Amir's journey is -£38.70.
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what should target charge for a package of paper plates if they want to make a 75% profit on the plates that originally cost $9.00
Answers
Answer:
$15.75
Step-by-step explanation:
All of these are valid ways to earn money in Microworkers, except
Answers
All of the given options are valid ways to earn money in Microworkers, except for submitting a review for a service you have not used. The correct option is "Submitting a review for a service you have not used."
Testing an app, translating a document, and data mining for a gardening company are all tasks that can be completed for compensation through the Microworkers platform.
However, submitting a review for a service you have not used is considered fraudulent and goes against the principles of the Microworkers community. It is important to maintain ethical practices when completing tasks for compensation in order to preserve the integrity of the platform. Therefore, "Submitting a review for a service you have not used." option is correct.
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The probable question may be:
All of these are valid ways to earn money in Microworkers, except
Testing an app
Submitting a review for a service you have not used
Translating a document
Data Mining for a gardening company
If Big Bun won 5 out of 25 matches, what percent did he win? A 25% B 20% C 15% D 10%
Answers
Answer:20%
Step-by-step explanation:
5(100)/25=20
Dan is training for a bike race. He wants to bike 300 miles over the next couples of weeks. Dan biked 29 miles a day for 3 days. Then, he biked 32 miles a day for 4 days. How many more miles does he still have to bike to get to his goal of 300 miles?
A. Sara estimated that Dan would need to bike about 80 more miles to get to his goal of 300 miles. Is this a reasonable estimate? Why or why not?
B. Write an equation for this problem with a letter standing for the unknown quantity.
C. Solve the problem. Show your work.
Answers
Answer:
Step-by-step explanation:
a. Sara's estimate is reasonable because:
Dan has biked for 7 days so far, 29 miles for 3 days and 32 miles for 4 days.
If you round 29 and 32 up and down respectively to 30, then Dan will of have ridden about 30 * 7, or 120 miles so far. 300-120 is 80, so that is a good estimate.
b. If x stands for the miles Dan still needs to bike, then:
(29*3) + (32*4) + x = 300
c. 87 + 128 + x = 300
x = 85
You deposit $3400 in an account with an annual interest of 3.3% for 10 years.
The amount of money you'll have at the end of 10 years is $
(Type an integer or a decimal.)
Answers
Answer: 3.3= .033 percentage. .033 times 34000=1112 times (t) time (10 years) equals 11120
Step-by-step explanation:
A(-4,4) B(2,7) C(2,1) where is the orthocenter
Answers
Answer:
Step-by-step explanation:
(1\2, 4) = (0.5, 4)
Given f(x)=5-3x, if f(x)=-19, find x.
Answers
-19=5-3x
-24=-3x
24=3x
x=24/3
x=8
F(x)=x 2 what is f(2)
Answers
we input the value 2 into the function, it will output the value 4.
What is Function?Each element of X is given precisely one element of Y by the function from a set X to a set Y. The sets X and Y are collectively referred to as the function's domain and co-domain, respectively. Initially, functions represented the idealized relationship between two variable quantities.
The function F(x) = x^2 represents a quadratic function, where the input value (x) is squared to produce the output value (F(x)).
To find the value of F(2), we simply need to substitute 2 in place of x in the equation:
F(2) = (2)^2 = 4
This means that when we input the value 2 into the function, it will output the value 4.
In other words, F(2) represents the value of the quadratic function at the point where x is equal to 2.
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Complete question:
If F(x)=x^2 then what is f(2).
In 1846 the depth of the river was 6.7 feet deep.
In 1847 it dropped 22%.
This year, 1848, it rose 10%.
You get to choose how you want to cross the river.
1. Raft (90% chance of crossing) + 0 bonus points
2. Float (75% chance of crossing) + 100 bonus points
3. Ford (60% chance of crossing) + 250 bonus points
You only get the bonus points if you cross safely.
You will lose supplies if you sink.
Complete the table to find the depth of the river each
year and enter your choice: 1, 2, or 3.
Year
1846
1847
1848
Choice?
Percent (%)
Change
-22
+10
Submit River Depth
Depth
6.7
Answers
Answer:
Step-by-step explanation:
A new homeowner is purchasing a living room set for $2,784 and must decide between two financing offers. Offer 1: $225 down payment, 24.90% interest rate, compounded monthly, for 3 years. Offer 2: $450 down payment, 22.90% interest rate, compounded monthly, for 4 years. Part A: What is the total cost of offer 1? Explain which technology you used to solve and each step of your process. (3 points) Part B: What is the total cost of offer 2? Explain which technology you used to solve and each step of your process. (3 points) Part C: Which financing offer should the new homeowner choose? Explain your reasoning.
Answers
Therefore , the solution of the given problem of interest comes out to be Offer 1 should be selected by the new homeowner since it has a reduced overall cost.
What exactly does the word interest mean?Divide the sum by the funding cost, the remaining time, and other factors to determine the simple interest rate. Principal loan repayment hours is the marketing plan with the simplest return. The simplest way to determine involvement is through this technique. In most instances, income is calculated as a percentage of the starting sum.
Here,
Part A: To start, we must divide the yearly interest rate by 12 to determine the monthly interest rate:
Monthly interest rate equals 24.90% divided by 12 equals 0.0249 per month.
=> Monthly payment = (P * r) / (1 - (1 + r)⁻ⁿ
=> Monthly payment = $104.23 per month
=> (2784 * 0.0249 / (1 - (1 + 0.0249)(-36)).
Taking the entire number of months (36) into account, we get:
Cost of the whole deal 1 = 36 * $104.23 = $3,751.28
As a result, offer 1's overall price is $3,751.28.
Part B:
First, we figure out the interest rate per month:
Monthly interest rate = 22.90% / 12 = 0.0229 / month.
=> Monthly payment = (P * r) / (1 - (1 + r)⁻ⁿ
=> Monthly payout
=> (1 - (1 + 0.0229)(-48)) / (2784 * 0.0229) ≈ $82.12/month
Using the entire number of months (48) as a multiplier, we obtain:
Cost of the whole deal 2 = 48 * $82.12 = $3,938.56
Part C:
Offer 1 costs $3,751.28 in total, while Offer 2 costs $3,938.56 in total.
Offer 1 should be selected by the new homeowner since it has a reduced overall cost.
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F(x)=5x+1 independent variable
Answers
Answer:
Step-by-step explanation:
the area of a rectangle is 14 square units. it has the side length of x and y. given each value for x, find y.
1. x = 4 and 1/5
2. x = 2 and 1/3
3. x = 7/6
Answers
Answer:
1. y = 3 1/3
2. y = 6
3. y = 12
Step-by-step explanation:
A = xy => xy = 14 => y = 14/x
1. x = 4 1/5 = 21/5
y = 14/x = 14/(21/5) = (5 x 14)/21 = 10/3 = 3 1/3
2. x = 2 1/3 = 7/3
y = 14/x = 14/(7/3) = (3 x 14)/7 = 6
3. x = 7/6
y = 14/x = 14/(7/6) = (6 x 14)/7 = 12
Answer the question below
Answers
Answer:
Step-by-step explanation:
This question's answer is 'c'. In the first function here we put the value of x=0, then y =3 but in the second function if we put the value of x=0 then y =2. so c is the correct answer.
100 Points!!! Algebra graphing question. Describe the reflection in the function as it relates to the parent graph. Then graph the function. Y=-|x| Photo attached. Thank you!!
Answers
The graph of the function y = -|x| is the graph of the function y = |x| reflected across the x-axis
How to describe the graph of the function y = |x|The function given in the question is
y = -|x|
The above function is an absolute value function graph
And the parent function of an absolute graph is
y = |x|
When y = |x| and y = -|x| compared, we have the transformation to be
A reflection across the x-axis
This means that the graph of y = |x| is reflected across the x-axis to create y = -|x|
See attachment for the graph of the function
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Are the fractions 2/2 and 8/8 equivalent fractions
Answers
Answer:
Step-by-step explanation:
yes since they are both divisible by their denominators and equal the same thing
Answer:
yes, they are equivalent
Step-by-step explanation:
2/2 = (2/2)x(4/4) = 8/8 = 1