2 years ago

Can someone PLEASE explain this im so confused?

Mathematics

1 answer:

Ivanshal [37]2 years ago

6 0

Answer: 158 degrees

Step-by-step explanation:

360 - 202 = 158 degrees

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What is the measure of tje fourth angle of the quadrilateral

grin007 [14]

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3 years ago

Please solve this problem.<br> 2x + 34 = 56

maksim [4K]

Answer:

x = 11

Step-by-step explanation:

2x + 34 = 56

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3 years ago

Read 2 more answers

Help me find Sample variance and standard deviation

AnnZ [28]

First, find the mean. You'll need it to compute the variance.

$\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11$

The variance of the sample is then computed with the formula

$s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5$

The standard deviation is the square root of the variance, so

$s=\sqrt{35.5}\approx5.958$