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iren2701 [21]
3 years ago
10

Why does a square with an area 20² not have a whole number side length.

Mathematics
1 answer:
Klio2033 [76]3 years ago
5 0

Answer:

This is because the number '20' is not a perfect square.

Step-by-step explanation:

If you find \sqrt{20}, you will be getting 4.4721935955... which is not a whole number, thus 20 is not a perfect square.

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Use the following data set to find the standard deviation of the set. 46, 34, 25, 31, 15, 50, 37, 42
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Standard deviation, σ = 10.7004

<h3>What is the standard deviation?</h3>

A standard deviation (or σ) exists as a measure of how dispersed the data exists concerning the mean. Low standard deviation indicates data exist clustered about the mean, and high standard deviation suggests data exist better spread out.

Given data 46, 34, 25, 31, 15, 50, 37, 42

The number of elements exists n = 8 (8 numbers in the set)

To calculate the mean,

(46+34+25+31+15+50+37+42)/8 = 280/8 = 35

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To calculate the variance,

Sum of the squared difference between each number of the set and the mean divided by the number of elements of the sample minus one.

Variance = [(46-35)² + (34-35)² + (25-35)² + (31-35)² + (15-35)²+ (50-35)² + (37-35)² + (42-35)²]/8

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To learn more about standard deviation  refer to:

brainly.com/question/14586559

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