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3 years ago

What is the percent increase from 49.5 to 99

Mathematics

1 answer:

ANEK [815]3 years ago

8 0

Answer:

Step-by-step explanation:

100%

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If BPD and dpc have a sum<br>of 72 degrees What is APC?<br><br><br><br>A. 18°<br>B 90°<br>D.180°

quester [9]

The correct answer is : 108

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3 years ago

The following is a linear sequence. 1, 4, 7, 10, 13...

jasenka [17]

We have

$a_n = 3n - 2$

We're asked for $a_{90}$

$a_{90} = 3(90) - 2 = 268$

Answer: C 268

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4 years ago

One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. How many minutes will

Alexxandr [17]

A can do 1 job in 10 min. means 1/10 job per min.
B can do 1/15 job per min.

together A&B can do 1/10+1/15 =1/6 job per min.

1/6 job they spend 1 min
1 spend 1x1/(1/6) = 6 min

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3 years ago

The US Census reported that it takes workers an average of 28 minutes to get home from work with standard deviation 5 minutes. A

xz_007 [3.2K]

Using the z-distribution, as we have the standard deviation for the population, to test the hypothesis, it is found that this is evidence that workers in the large city take longer than 28 minutes to get home from work.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if the mean time is of 28 minutes, that is:

$H_0: \mu = 28$

At the alternative hypothesis, it is tested if the mean time is greater than 28 minutes, that is:

$H_1: \mu > 28$ .

<h3>What is the test statistic?</h3>

The test statistic is given by:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.

$\mu$ is the value tested at the null hypothesis.

$\sigma$ is the standard deviation of the sample.

n is the sample size.

In this problem, the values of the parameters are given by:

$\overline{x} = 32, \mu = 28, \sigma = 5, n = 10$

Hence:

$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{32 - 28}{\frac{5}{\sqrt{10}}}$

$z = 2.53$

<h3>What is the decision?</h3>

Considering that we have a <em>right-tailed test</em>, as we are testing if the mean is greater than a value, with a standard <em>significance level of 0.05</em>, the critical value is of $z^\ast = 1.645$ .

Since the test statistic is greater than the critical value, it is found that this is evidence that workers in the large city take longer than 28 minutes to get home from work.

To learn more about the z-distribution, you can check brainly.com/question/26454209

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2 years ago

Point C has a _____ abscissa and a _____ ordinate.

vampirchik [111]

Based on the picture above,

i think point C has a Positive abscissa and a Negative ordinate

Hope this helps

7 0

3 years ago

Read 2 more answers