What is the difference of 5 + 2x? 4 3 6

Manny takes 36 pics with his new phone every hour and Colby takes 12 pics with his new phone every hour. Write an expression tha

Afina-wow [57]

Answer:

48h

Step-by-step explanation:

Manny's amount of pictures will be represented by 36h, since he takes 36 every hour.

Colby's amount will be represented by 12h, since he takes 12 per hour.

Add these two together to get an expression:

36h + 12h

= 48h

So, 48h is the expression that can describe the combination of both of their pictures.

7 0

3 years ago

Please help!! x squared = 36/64

Ulleksa [173]

Answer:

6/8

Step-by-step explanation:

x^2=36/64

x=√36/√64

x=6/8

3 0

3 years ago

Mary practiced violin for 2 hours and her brother practiced trombone t times as long or 8 hours. Write and solve an equation to

Bond [772]

Answer:

Mary's brother practiced 4 times as long.

Step-by-step explanation:

Mary practiced violin for 2 hours.

Her brother practiced trombone t times as long or 8 hours.

t times of 2 hours = 2t hours

But, 2t = 8

Divide both sides by 2.

t = 4

Hence, Mary's brother practiced 4 times as long as Mary.

4 0

3 years ago

An Austrian study was completed to determine if untrained sea lions and sea lionesses could follow various experimenter-given cu

Sholpan [36]

Using the z-distribution, it is found that since the test statistic is greater than the critical value for the right-tailed test, this result shows that Zwerg can correctly follow this type of direction by an experimenter more than 50% of the time.

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

At the null hypothesis, it is tested if Zwerg cannot correctly follow this type of direction by an experimenter more than 50% of the time, that is:

$H_0: p \leq 0.5$

At the alternative hypothesis, it is tested if Zwerg can correctly follow this type of direction by an experimenter more than 50% of the time, that is:

$H_1: p > 0.5$

<h3>Test statistic</h3>

The <em>test statistic</em> is given by:

$z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}$

In which:

$\overline{p}$ is the sample proportion.

p is the proportion tested at the null hypothesis.

n is the sample size.

For this problem, the parameters are:

$n = 48, \overline{p} = \frac{37}{48} = 0.7708, p = 0.5$

The value of the <em>test statistic</em> is:

$z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}$

$z = \frac{0.7708 - 0.5}{\sqrt{\frac{0.5(0.5)}{48}}}$

$z = 3.75$

Considering a <u>right-tailed test</u>, as we are testing if the proportion is greater than a value, with a <u>significance level of 0.05</u>, the critical value for the z-distribution is $z^{\ast} = 1.645$ .

Since the test statistic is greater than the critical value for the right-tailed test, this result shows that Zwerg can correctly follow this type of direction by an experimenter more than 50% of the time.

To learn more about the z-distribution, you can take a look at brainly.com/question/16313918

3 0

3 years ago

Your factory produces lemon-scented widgets. You know that each unit is cheaper, the more you produce. But you also know that co

Sindrei [870]

try using m athway . c o m for math help

8 0

3 years ago

What is the difference of 5 + 2x? 4 3 6​

What is the difference of 5 + 2x? 4 3 6