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3 years ago

14

Which shapes are congruent? (See attachment)

2 answers:

sasho [114]3 years ago

8 0

Hello!

The 2nd, 3rd, and last choices are congruent. The rest are not congruent.

I hope this helps! -Wajiha

Andre45 [30]3 years ago

3 0

Hello! Congruent figures are those with the same size and shape. With that being said, if you look at the shapes correctly, here are your answers:

Quad 1 & 2: Not Congruent
Quad 1 & 3: Congruent
Quad 1 & 4: Congruent
Quad 2 & 3: Not Congruent
Quad 2 & 4: Not Congruent
Quad 3 & 4: Congruent

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For a data set of N elements:

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The mean is:

$M = \frac{x_1 + x_2 + ... + x_n}{N}$

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$MAD = \frac{|x_1 - M| + ... + |x_n - M|}{N}$

And the population standard deviation is:

$PSD = \frac{\sqrt{|x_1 - M|^2 + ... + |x_n - M|^2} }{\sqrt{N}}$

In this case, our set has 5 elements, and the set is:

{2, 4, 6, 9, 14}

The mean of this set is:

$M = \frac{2 + 4 + 6 + 9 + 14}{5} = 7$

The mean absolute deviation is:

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And the population standard deviation is:

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