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kozerog [31]
3 years ago
11

7 less or greater than 5x -16 does it equal 4?

Mathematics
1 answer:
Marysya12 [62]3 years ago
4 0
Can you re-phrase the question


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MA_775_DIABLO [31]

Answer:

square root of 166, 13, 14

Step-by-step explanation:

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2 years ago
I have 5 digits. My 9 is worth 9 ∗ 10,000. My 2 is worth 2 thousand. One of my 7s is worth 70. The other is worth 10 times as mu
Natasha2012 [34]
The answer is 92,776 because 10 times as much as 70 is 700 which gives the answer for the hundreds position.
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3 years ago
What is 61 /<br> 100 -7/25
boyakko [2]

Answer:

0.33

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3 0
3 years ago
Read 2 more answers
A phone manufacturer wants to compete in the touch screen phone market. He understands that the lead product has a battery life
alisha [4.7K]

Answer:

a)

The null hypothesis is H_0: \mu \leq 10

The alternative hypothesis is H_1: \mu > 10

b-1) The value of the test statistic is t = 1.86.

b-2) The p-value is of 0.0348.

Step-by-step explanation:

Question a:

Test if the battery life is more than twice of 5 hours:

Twice of 5 hours = 5*2 = 10 hours.

At the null hypothesis, we test if the battery life is of 10 hours or less, than is:

H_0: \mu \leq 10

At the alternative hypothesis, we test if the battery life is of more than 10 hours, that is:

H_1: \mu > 10

b-1. Calculate the value of the test statistic.

The test statistic is:

We have the standard deviation for the sample, so the t-distribution is used to solve this question

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

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

10 is tested at the null hypothesis:

This means that \mu = 10

In order to test the claim, a researcher samples 45 units of the new phone and finds that the sample battery life averages 10.5 hours with a sample standard deviation of 1.8 hours.

This means that n = 45, X = 10.5, s = 1.8

Then

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{10.5 - 10}{\frac{1.8}{\sqrt{45}}}

t = 1.86

The value of the test statistic is t = 1.86.

b-2. Find the p-value.

Testing if the mean is more than a value, so a right-tailed test.

Sample of 45, so 45 - 1 = 44 degrees of freedom.

Test statistic t = 1.86.

Using a t-distribution calculator, the p-value is of 0.0348.

5 0
2 years ago
Find the volume of the rectangular prism.<br> IN<br> in.<br> 4 in.<br> 9-in.<br> 2<br> I
prisoha [69]

Answer:

V = 36 in³

Step-by-step explanation:

The volume of a rectangular prism is given by the formula V = l × w × h

Here our length is 9\frac{1}{2}, our width is 4, and our height is 4\frac{1}{2}

Plugging in these values to our formula give us V=(9\frac{1}{2})(4)(4\frac{1}{2})= 36

V = 36 in³

6 0
3 years ago
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