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2 years ago

Please see below!! Thank you so much in advance :)

Mathematics

1 answer:

stellarik [79]2 years ago

7 0

Answer:

a) x = -1.9, 1.05

b) x = -3, 0, 2

Explanation:

I hope it's correct

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What is the average rate of change of the function from X=2 to x=4

RideAnS [48]

Answer:

I have no results if I get some I will notify you

Step-by-step explanation:

I hope that help's

4 0

3 years ago

A government watchdog association claims that 70% of people in the U.S. agree that the government is inefficient and wasteful. Y

nata0808 [166]

Answer:

Option D) There is sufficient evidence that the true population proportion is not equal to 70%.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1165

p = 70% = 0.7

Alpha, α = 0.02

Number of people who agreed , x = 746

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.7\\H_A: p \neq 0.7$

This is a two-tailed test.

Formula:

$\hat{p} = \dfrac{x}{n} = \dfrac{746}{1165} = 0.64$

$z = \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Putting the values, we get,

$z = \displaystyle\frac{0.64-0.7}{\sqrt{\frac{0.7(1-0.7)}{1165}}} = -4.46$

Now, $z_{critical} \text{ at 0.02 level of significance } = \pm 2.33$

Since,

Since, the calculated z statistic does not lie in the acceptance region, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there is enough evidence to support the claim that the true proportion differs from 70%.

Option D) There is sufficient evidence that the true population proportion is not equal to 70%.

3 0

3 years ago

TIMED! Can somebody please help me with this?

kondaur [170]

Answer:

use quizlet

Step-by-step explanation:

7 0

3 years ago

What is the volume of this rectangular prism? <br> 3ft by 6 1/4 ft by 14 ft

Liula [17]

We can find the volume of any rectangular prism by simply multiplicating its height, length and width.

Also, lets change that 6 1/4 to 6.25, or 25/4 if you like. I’m gonna use 6.25.

If we take volume as “V”, then:

V = L * W * H
V = 3ft * 6.25ft * 14ft
V = 262.5 ft^3 (Its ft cubed because we multiplied by ft three times.)

7 0

3 years ago

brandy and adriana work at an after school child care center together they cared for 32 children this week brandy cared for 0.6

Tpy6a [65]

Answer:

Adriana took care of 20 kids. And Brandy took care of 12 kids.

Step-by-step explanation:

Here,

Let us suppose Adriana took care of "x" number of children after school.

Then, by the question,

Brandy took care of 0.6 times as many children as adriana.

i.e. Brandy took care of =0.6*x children