can u help me with this easy math problem?

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can u help me with this easy math problem?

if 2 cars are leaving a intersection, and one is moving at 20 mph south and the other is moving 36 mph west. How fast is there distance changing the instant they are 2.4 miles away?

2007-02-12 15:33:02 · 3 answers · asked by SUPERMAN 4 in Science & Mathematics ➔ Mathematics

3 answers

Can you be my superman and save me..? :)~

2007-02-13 07:29:36 · answer #1 · answered by Fashionista 4 · 0⤊ 0⤋

the simple way to do this problem is to set up a pythagorean triangle with the rates and then

20^2 + 36^2 = x^2

so x = 41.1825 mph

2007-02-12 23:39:03 · answer #2 · answered by math10sprof 2 · 0⤊ 0⤋

That looks correct to me. The rate of change of distance between them is a constant.

2007-02-13 04:16:33 · answer #3 · answered by Curt Monash 7 · 0⤊ 0⤋