2 planes leave the airport at the same time traveling in opposite directions. the first plane traveled at an average rate of 30 mph slower than the 2nd plane. after 3 hours the planes were 3150 miles apart.

enter in an equation that can be used to determine when the planes were 3150 miles apart, let x represent the average rate of the second plane.

enter the average rate of change of the 2nd plane

Question

Mathematics

Vasquez

23 November, 00:28

2 planes leave the airport at the same time traveling in opposite directions. the first plane traveled at an average rate of 30 mph slower than the 2nd plane. after 3 hours the planes were 3150 miles apart.

enter in an equation that can be used to determine when the planes were 3150 miles apart, let x represent the average rate of the second plane.

enter the average rate of change of the 2nd plane

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Answers (1)

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Slick · Answer 1

3 (x+30) + 3x=3150

3x+90+3x=3150

6x+90=3150

6x+90-90=3150-90

6x=3060

6x/6=3060/6

x=510

One plane flew at: x+30=510+30=540 mph

The other flew at: x=510 mph