Answer:
D
Step-by-step explanation:
Using the Pythagorean Theorem, the side needs to be found by subtracting a to c then square root b to get rid of the square. Round 12.96 to 13
First, you add them together which equals 42 than divide by 6. There are 3 different ways.
Time for first plane = 625 / 250
= 2.5 hours
after 1.25 hours
boeing 747 takes 1.25 hours (2.5 - 1.25) to arrive at the same location at the same time
so, speed = distance / time
= 625 / 1.25
= 500
the average speed of the boeing 747 is 500 mph