Homework Help: math

Posted by dell on Friday, November 2, 2012 at 12:52pm.

Two cars leave the same point at noon. One car travels North and the other car travels East. Suppose the North bound car is travling 40mph and after two hours, the two cars are 100 miles apart. How fast is the other car going?

math - Reiny, Friday, November 2, 2012 at 5:26pm
Your diagram should be a right-angled triangle with sides 80, 2r, and hypotenuse 100

(2r)^2 + 80^2 = 100^2
4r^2 = 3600
r^2 = 900
r = √900 = 30

The other car was going 30 mph

Answer this Question

Related Questions

math - two cars leave the same point at noon. one car travels north and the ...
math - two cars leave the same point at noon. one car travels north and the ...
algebra 2 - two cars leave an intersection. one car travels north; the other ...
calculus - Q#1: From a point of O, two cars leave at the same time. One car ...
College Physics - suppose the two cars are headed in the same direction. A ...
math - Currently, the Toyota Corolla is the best selling car in the world. ...
math - Currently, the Toyota Corolla is the best selling car in the world. ...
Help again...Math!! - Two cars leave town going in the same direction. One ...
math - Currently, the Toyota Corolla is the best selling car in the world. ...
physics - Cars A and B are racing each other along the same straight road in the...

For Further Reading

First Name:
School Subject:
Answer: