Answer:
20 minutes
Step-by-step explanation:
If he can run 3 miles in 30 minutes(half an hour) that means it takes him 10 minutes to run 1 mile. So to run 2 miles it would take him 20 minutes.
2(12+18) is not equivalent to 24+18
Answer:
18
Step-by-step explanation:
60-12-12=36
36/2=18
Answer:
4.77, approximately 5 cycles per minute
Step-by-step explanation:
For a loaded spring, the frequency of oscillation is given by

where
Vis the mass of the load and
is spring constant.
Substituting values in the question,




This value is in units of oscillations per second. To convert to oscillations per minute, we divide by
or, in essence, multiply
by 60.
Thus, we have

