Homework Help: math

Posted by Sasha on Monday, October 27, 2008 at 9:10pm.

Edna and Nancy leave the house of a common friend at the same time and walk for 4 hours. Edna walks due east at the average rate of 4 kilometers per hour and Nancy walks due north at the average rate of 3 kilometers per hour. What is the straight-line distance between them in kilometers, at the end of the 4 hours?

math - bobpursley, Monday, October 27, 2008 at 9:14pm
on walked 12km, and one walked 16km at right angles.

Isn't this a 3-4-5 right triangle?
- math - Sasha, Monday, October 27, 2008 at 9:17pm
  Yes, it probably is, but I have a hard time solving problems that involve 3-4-5 triangles or anything similar to that.
math - Reiny, Monday, October 27, 2008 at 9:17pm
Wow, Edna and Nancy walk for 16 km and 12 km??
Can't be in 2008, they would get in their SUV's for sure, lol

I see a right-angled triangle with sides 12 and 16, where you have to find the hypotenuse.
Think Pythagoras !
- math - Sasha, Monday, October 27, 2008 at 9:18pm
  lol, thank you. I understand the problem now.

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