anispotts
01.10.2019 •
Mathematics
True or false conceptually the circumference is the perimeter of a circle?
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Ответ:
True
Reasoning:
The circumference of a circle means the same thing as the perimeter of a circle.
Ответ:
D = r*t
Let x represent the submarines speed.
Question states*** 280mi apart after traveling opposite direction
11hr*x + 25mph*9hr = 280mi |note:submarine left Hawaii two hours before an aircraft carrier
Solving for x
11hrx = 55mi
x = 5mph, the submarine's speed