Every week, Tiana runs 3 miles and records how long it takes to complete the run. She also records the change in time from the previous week. This week, her time spent running increased by 1 minute. What integer could represent this change?

answer: .64

step-by-step explanation

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

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

step-by-step explanation:

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