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Answer:
The answer is "1035.76 miles"
Explanation:
The aircraft flies at 120 mph for 1.5 hours at a
bearing, then flies at the very same speed at
bearings for 8.5 hours.
However an angle of
between displacements
First shifts
Second shift 
These two shifts are at
and therefore the final shift is:

1.09÷3= .3633 each
4.49÷12= .37416 each
8.78÷24= .3658 each
so the first one
Answer:
b = 48
Step-by-step explanation:
b / 4 = 12
b / 4 * 4 = 12 * 4
b = 48
Notice that 45 hours is 3 times the half-life of 15 hours.
After the first 15 hours, 450 g decays to half this amount, 225 g.
After the next 15 (total 30), 225 g decays to 112.5 g.
After the next 15 (total 45), 112.5 g decays to 56.25 g.