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notka56 [123]
3 years ago
5

The perimeter of a rectangle is 68 inches. Its width is 16 inches. What is its length? A 16 inches B 18 inches C 20 inches D 22

inches
Mathematics
1 answer:
Phantasy [73]3 years ago
8 0

Answer: 18

Step-by-step explanation:

:)

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A line is the locus of points that:
Len [333]

Answer:

Option D

Step-by-step explanation:

Option A represents the circle

Option B represents the parabola

Option C represents the ellipse

Option D represents the line

6 0
3 years ago
A survey in Men’s Health magazine reported that 39% of cardiologists said that they took vitamin E supplements. To see if this i
zzz [600]

Answer:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

Step-by-step explanation:

Information given

n=100 represent the random sample taken

X=36 represent the number of people that take E supplement

\hat p=\frac{36}{100}=0.36 estimated proportion of people who take R supplement

p_o=0.39 is the value that we want to test

\alpha=0.05 represent the significance level

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true proportion is equatl to 0.39 or not, the system of hypothesis are.:  

Null hypothesis:p=0.39  

Alternative hypothesis:p \neq 0.39  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info we got:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

8 0
3 years ago
Please help me I need assistance
lawyer [7]

(\stackrel{x_1}{2}~,~\stackrel{y_1}{-15})\qquad (\stackrel{x_2}{14}~,~\stackrel{y_2}{r}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{r}-\stackrel{y1}{(-15)}}}{\underset{run} {\underset{x_2}{14}-\underset{x_1}{2}}}~~ = ~~\stackrel{\stackrel{m}{\downarrow }}{\cfrac{3}{4}}\implies \cfrac{r+15}{12}~~ = ~~\cfrac{3}{4}\implies r+15 = \cfrac{12\cdot 3}{4} \\\\\\ r+15=9\implies \boxed{r=-6}

3 0
2 years ago
9 3/4 - 1 1/4 in simplest form
Kipish [7]
8 1/2 would be the answer to this question
4 0
3 years ago
Which expression is equivalent to the area of square A, in square centimeters?
oksano4ka [1.4K]
You can use the Pythagorean theorem for this question, because all three of the squares form a right triangle together.

A=24²+45²

The answer is the bottom choice.
5 0
3 years ago
Read 2 more answers
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