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3 years ago

• The scale on a map is 1 inch to 20 miles. How many

Mathematics

2 answers:

Elodia [21]3 years ago

8 0

Answer:160 miles

Step-by-step explanation:

Since one inch is equal to 20 miles, multiply 8 by 20. 8*20 = 160

sammy [17]3 years ago

6 0

Answer:

160 miles

Step-by-step explanation:

20 times 8 is 160 so that is your answer.

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Black_prince [1.1K]

Answer in the attachment.

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3 years ago

Find the sample standard deviation of the following data set, using the statistical functions on your calculator.0.2315 0.4725 0

Nonamiya [84]

Answer:

Option C) 0.2358

Step-by-step explanation:

We are given the following data set:

0.23105, 0.4725, 0.8765, 0.4865, 0.5326, 0.7976

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{3.39675}{6} = 0.566125$

Sum of squares of differences = 0.1122752556 + 0.008765640625 + 0.09633264063 + 0.006340140625 + 0.001123925625 + 0.05358067562 = 0.2784182787

$S.D = \sqrt{\frac{0.2784182787}{5}} = 0.2358$

Thus, the standard deviation for given data is

Option C) 0.2358

7 0

3 years ago

Five-sixths of a number is 45. Find the number.

tia_tia [17]

Answer: The number is 54!!!

Hope it helps!!!

Step-by-step explanation:

Let's call the number x.

So, 5/6 (of or multiplication) = 45

5x = 45* 6

x = 270/5

x = 54

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3 years ago

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lilavasa [31]

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3 years ago

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kakasveta [241]

Answer:

They have both root common .

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3 years ago