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The answer is B. m∠ POS + m∠ POR = 180

step-by-step explanation:

Because if you already know that m∠POQ equals 90 because it is a right angle

Then all you have to do is take 90 from 180 which is 90 then divide 90 by two which is 45

now you have the measurement for the two acute angles 45

which makes m∠POS = 45 and m∠QOR =45

NOW YOU HAVE TO ADD 90 AND  45 AND 45 ALL TOGETHER THEN YOU WILL HAVE 180

the perimeter is increased by a factor of 2

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify