Answer:
2.8
Step-by-step explanation:
I hope this helps!
Answer:
−4x−4=12
Step 1: Add 4 to both sides.
−4x−4+4=12+4
−4x=16
Step 2: Divide both sides by -4.
−4x = 16
−4 −4
x=−4
Answer:
x=−4
Answer:
C, ON/MN
Step-by-step explanation:
Since tan is opposite/adjacent, and the opposite of angle M is NO, then NO must be the numerator. The only answer with this as the numerator is C.
Answer:
b plus 3 is equal to b squared
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