I need to know the answer and the steps on how to work out the problem.

Mathematics

1 answer:

DaniilM [7]3 years ago

6 0

Let v be the speed of the slower plane in mph.
Then the speed of the faster plane will be (v + 55) mph.
the closing speed of the two planes is the sum of their speeds:
v + v + 55 = 2v + 55
$time=\frac{distance}{speed}$
$3=\frac{1965}{2v+55}$
Cross-multiplying, we get:
6v + 165 = 1965
6v = 1800
v = 300
The speeds of the planes are 300 mph and 355 mph.

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what is perpendicular to y= 3x -9 and passes through the point (3,1)

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3 years ago

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Sergeeva-Olga [200]

Answer:

207.24 inches

Hope this helps

Step-by-step explanation:

first you need to find the circumference...

2pi R (r=radius=11)

2 x 3.14 x 11 = 69.08 (i'm using 3.14 as pi so yea...)

3 rotations...