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3 years ago

HELPPPP!!!! ASAPPPPPP!!!!

Mathematics

1 answer:

7nadin3 [17]3 years ago

6 0

Multiply the first equation by three, the y’s will cancel out.

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The answer is B to the problem. B/c difference is 7 on the number line.

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4 years ago

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Find the slope of the line graphed below.

m_a_m_a [10]

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Step-by-step explanation:

To find the slope, you want to take the two points and plug it into the formula $m=\frac{y_2-y_1}{x_2-x_1}$ . That will find the slope. The points are (-5,-4) and (-1,2). $m=\frac{2-(-4)}{-1-(-5)} =\frac{6}{4}=\frac{3}{2}$

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3 years ago

In a grocery store a $21 case of toilet paper is labeled, "Get a 20% discount." What is the discount? What is the sale price of

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Hi There!

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4 years ago

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1.17 A study of the effects of smoking on sleep patterns is conducted. The measure observed is the time, in minutes, that it tak

bearhunter [10]

Answer:

$\bar X_F=43.7$

$\bar X_{NF}=30.32$

$S_F=16.9278$

$S_{NF}=7.12783$

Attached file

Apparently the practice of smoking reduces the ability to fall asleep, demanding much more time in individuals who smoke, than in those who do not smoke.

Step-by-step explanation:

a, b) For the group of smoking individuals, the average time it takes to fall asleep and the standard deviation of those times is:

$\bar X_F={\frac{1}{n} \sum_{i=1}^n x_i = 43.7$

$S_F=\sqrt{\frac{1}{n-1} \sum_{i=1}^n (x_i-\bar{x})^2}=16.9278$

a, b) For the group of non-smoking individuals, the average time it takes to fall asleep and the standard deviation of those times is:

$\bar X_{NF}={\frac{1}{n} \sum_{i=1}^n x_i = 30.32$

$S_{NF}=\sqrt{\frac{1}{n-1} \sum_{i=1}^n (x_i-\bar{x})^2}=7.12783$

c. In the attached file you can see the diagram of points for the times, in the smoking and non-smoking groups.

d. Apparently the practice of smoking reduces the ability to fall asleep, demanding much more time in individuals who smoke, than in those who do not smoke.

Download pdf

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4 years ago