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3 years ago

13

Find the equation whose graph is a parabola with vertex (2,4), vertical axis of symmetry, and contains the point (1,1). Express

your answer in the form ax^2+bx+c
Please don't answer this unless you actually have the correct answer.

1 answer:

gtnhenbr [62]3 years ago

4 0

Answer:

a

Step-by-step explanation:

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at 2: 00 PM constant speed may 4:00 constant speed

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2 years ago

So a computer is priced at the store for $380over a holiday weekend the store is having a 15% discount how much money would you

Rufina [12.5K]

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the answer is $57

Step-by-step explanation:

380 - 15% = 323. meaning $57 was saved.

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3 years ago

A Gallup Poll used telephone interviews to survey a sample of 1030 U.S. residents over the age of 18 regarding their use of cred

Vlada [557]

Answer:

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

72% of Americans said that they had at least one credit card

This means that $p = 0.72$

Give the 95% margin of error for this estimate.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.96\sqrt{\frac{0.72*0.28)}{1030}} = 0.0274$

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

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4 years ago

Find the value of x and the measure of the exterior angle. (9x+16) (5x-14)

olasank [31]

Answer:

$x = 15 \: \: .....(5(15)- 14) = 61$

$(9x + 16 )= (5x - 14) + 90 \\ 9x - 5x = 90 - 14 - 16 \\ 4x = 60 \\ x = \frac{60}{4} \\ x = 15$

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3 years ago

Examine the end behavior of function f(x) as shown in the graph.

mariarad [96]

Answer:

DFbcdrgv

Step-by-step explanation:

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3 years ago

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