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3 years ago

Double the difference of 25 and 10 is

Mathematics

2 answers:

Gennadij [26K]3 years ago

7 0

Answer:

Step-by-step explanation:

25-10 = 15

15 x 2 = 30

Oduvanchick [21]3 years ago

6 0

<h2>Double the difference of 25 and 10 is:</h2>

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First we must get the difference between 25 and 10.

$25 - 10 = \green{15}$

Next, we must double the answer.

$15 \times 2 = \bold \blue{30} \\ \tt or \\ {15}^{2} = \purple {\sf{30}}$

Therefore, the answer is 30.

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3 years ago

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence i

Pavlova-9 [17]

Answer:

$\bar X = \frac{Lower +Upper}{2}$

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And the margin of error with this one:

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$ME = \frac{3.3-1.9}{2}= 0.7$

Step-by-step explanation:

Assuming that the parameter of interest is the sample mean $\mu$ . And we can estimate this parameter with a confidence interval given by this formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

For this case the confidence interval is given by (1.9, 3.3)

Since the confidence interval is symmetrical we can estimate the sample mean with this formula:

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And the margin of error with this one:

$\bar X = \frac{Upper-Lower}{2}$

$ME = \frac{3.3-1.9}{2}= 0.7$

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3 years ago

Find the measure of each exterior angle of a regular 56-gon.

Karo-lina-s [1.5K]

The answer is 6 degree.

Step by step process

The formula for calculating the measure of each exterior angle of a polygon is (360/n).

The number of sides of 56-gon(n) = 56.

So, each exterior angle
= (360/56)
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Answer:

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Step-by-step explanation:

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Answer:

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2 years ago

Read 2 more answers