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Crazy boy [7]
2 years ago
11

Use expanded form or number name to complete the definition.

Mathematics
1 answer:
Evgen [1.6K]2 years ago
7 0
Can you take a picture of the problem
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the length of a rectangle is 3 times the width the perimeter of rectangle is 44cm. what is the length and the width?
Gennadij [26K]

The rectangle length is 16.5 cm.

The rectangle width is 5.5 cm.

5 0
3 years ago
Quit smoking: In a survey of 444 HIV-positive smokers, 202 reported that they had used a nicotine patch to try to quit smoking.
Flauer [41]

Answer:

The p-value of the test is of 0.0287 < 0.05(standard significance level), which means that it can be concluded that less than half of HIV-positive smokers have used a nicotine patch.

Step-by-step explanation:

Test if less than half of HIV-positive smokers have used a nicotine patch:

At the null hypothesis, we test if the proportion is of at least half, that is:

H_0: p \geq 0.5

At the alternative hypothesis, we test if the proportion is below 0.5, that is:

H_1: p < 0.5

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.5 is tested at the null hypothesis:

This means that \mu = 0.5, \sigma = \sqrt{0.5*(1-0.5)} = 0.5

In a survey of 444 HIV-positive smokers, 202 reported that they had used a nicotine patch to try to quit smoking.

This means that n = 444, X = \frac{202}{444} = 0.455

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.455 - 0.5}{\frac{0.5}{\sqrt{444}}}

z = -1.9

P-value of the test and decision:

The p-value of the test is the probability of finding a sample proportion below 0.455, which is the p-value of z = -1.9.

Looking at the z-table, z = -1.9 has a p-value of 0.0287.

The p-value is of 0.0287 < 0.05(standard significance level), which means that it can be concluded that less than half of HIV-positive smokers have used a nicotine patch.

5 0
3 years ago
To make a bakery's signature chocolate muffins
garri49 [273]

Become a ninja sneak in and steal their recipe and get out and don't get caught. - VEX

7 0
2 years ago
Which expression is equivalent to 2(m − 5) + 6?
Dahasolnce [82]

Answer: 2m-4

Step-by-step explanation:

 2(m-5)+6

=2m-10+6

=2m-(10-6)

=2m-4

Hope this helps!! :)

Please let me know if you have any question

7 0
3 years ago
Read 2 more answers
Let tan x = 2.4, sin y = 0.6, and both x and y be between 0° and 90°. Then cos(x + y) equals?
ZanzabumX [31]
0.99 if you round up it will just be 1
4 0
3 years ago
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