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3 years ago

PLEASE look at photo and help!

Mathematics

1 answer:

VMariaS [17]3 years ago

6 0

It would be a a 6 by 5 inch rectangle, since the height is 6in and the width is 5in. Those are what would make up the cross section.

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Identify the slope of the line that passes through the given points (4, 4) and (-2, -3). Identify the slope of the line that pas

bogdanovich [222]

Answer:

m = 7/6

m = -4/9

Step-by-step explanation:

y2 - y1 / x2 - x1

The formula to find the slope.

3 0

3 years ago

Need help asapppppppppppppp

german

There are 12 boys enrolled in algebra 2

4 0

3 years ago

Researchers at Gallup were interested in whether there was a decrease in the proportion of nonretirees (in other words, people w

Lera25 [3.4K]

Answer:

A. We have extremely strong evidence to reject H0.

Step-by-step explanation:

Let P be the proportion of non-retirees in 2015 who did not think that Social Security would be able to pay a retirement benefit by the time that they retire.

According to the data null and alternative hypotheses should be:

$H_{0}$ : P=0.60

$H_{a}$ : P<0.60

Test statistics is -4.29 and p-value of the statistics is p<0.001

At every significance levels higher than 0.001, we can reject the null hypothesis since p<0.001.

8 0

4 years ago

What information is shown on the horizontal axis of a bar chart?

Bad White [126]

The information shown on the horizontal axis of a bar chart is the qualitative class labels.

<h3>What is a bar chart?</h3>

A bar chart is a graph that is used to represent data graphically using rectangular bars. A bar charts has two axis:

The vertical axis or the y axis which shows the frequency of the observations.
The horizontal axis or the x axis shows the qualitative class labels.

To learn more about bar charts, please check: brainly.com/question/14473126

#SPJ1

4 0

2 years ago

A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salari

guajiro [1.7K]

Answer:

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

$F_{critical} = 1.8608$

$F = 2.9085$

The decision rule is

Reject the null hypothesis

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 30$

The sample variance for elementary school is $s^2_1 = 8324$

The second sample size is $n_2 = 30$

The sample variance for the secondary school is $s^2_2 = 2862$

The significance level is $\alpha = 0.05$

The null hypothesis is $H_o : \sigma^2_1 = \sigma^2 _2$

The alternative hypothesis is $H_a : \sigma_1 ^2 > \sigma^2_2$

Generally from the F statistics table the critical value of $\alpha = 0.05$ at first and second degree of freedom $df_1 = n_1 - 1 = 30 - 1 = 29$ and $df_2 = n_2 - 1 = 30 - 1 = 29$ is