Change in y = 6
change in x = -9
so slope is 6/-9 = 2/-3 =
change in x = -9
so slope is 6/-9 = 2/-3 =
Find the mean of the data set. If necessary, round to the nearest tenth. 18 14 8 22 25 8 A. 15.8 B, 14.8 C.16.1 D.17.3
2 answers:
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Answer:
Problem 1) frequency: 160 heartbeats per minute, period= 0.00625 minutes (or 0.375 seconds)
Problem 2) Runner B has the smallest period
Problem 3) The sound propagates faster via a solid than via air, then the sound of the train will arrive faster via the rails.
Step-by-step explanation:
The frequency of the football player is 160 heartbeats per minute.
The period is (using the equation you showed above):
second problem:
Runner A does 200 loops in 60 minutes so his frequency is:
loops per minute
then the period is: 0.3 minutes (does one loop in 0.3 minutes)
the other runner does 200 loops in 65 minutes, so his frequency is:
loops per minute
then the period is:
Therefore runner B has the smaller period