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2 years ago

I'm not good at time questions can someone help me?

Mathematics

1 answer:

Agata [3.3K]2 years ago

3 0

Randy should begin his homework by 07:10 in order to sleep by 10:00

<h3>How to determine the time to start the homework?</h3>

The given parameters are:

Social studies = 45 minutes
Science = 40 minutes
Math = 1 hour and 15 minutes
Bed preparation = 10 minutes

If the above activities are done, the time spent would be:

Time = 45 minutes + 40 minutes + 1 hour and 15 minutes + 10 minutes

Add the time

Time = 2 hour and 50 minutes

He wants to go to bed by 10:00.

So, the time to begin his homework is:

Begin = 10:00 - 2 hour and 50 minutes

Evaluate the difference

Begin = 07:10

Hence, Randy should begin his homework by 07:10

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17 + 3y = 7x
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4 years ago

-6(1 - 5v) = 54 -67301 = 54 I don't think that is the anwer

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3 years ago

Keith runs 4 miles in 30 min, at the same rate, how many minutes would he take to run 10 miles

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4 years ago

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A survey recently reported that the mean national annual expenditure for inpatient and outpatient services of all persons over 6

zlopas [31]

Using the z-distribution, it is found that the p-value for this test is of 0.0375.

At the null hypothesis, it is tested if the expenses are the same as the national average, that is, of $5,423. Hence:

$H_0: \mu = 5423$

At the alternative hypothesis, it is tested if it is higher, hence:

$H_1: \mu > 5423$

We have the standard deviation for the population, thus, the z-distribution is used. 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.

For this problem, the values of the parameters are: $\overline{x} = 5516, \mu = 5423, \sigma = 979, n = 352$

The value of the test statistic is:

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

$z = \frac{5516 - 5423}{\frac{979}{\sqrt{352}}}$

$z = 1.78$

The p-value is the probability of finding a sample mean above $5,516, which is 1 subtracted by the p-value of z = 1.78.

Looking at the z-table, z = 1.78 has a p-value of 0.9625.

1 - 0.9625 = 0.0375

Hence, the p-value for this test is of 0.0375.

A similar problem is given at brainly.com/question/25549474

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3 years ago

Which of the following objects show an OBTUSE angle?

antiseptic1488 [7]

And obtuse angle is greater than 90°

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3 years ago

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