Answer:
10 miles
Explanation:
West and North directions are at right angles to each other.
This forms a right triangle with the hypotenuse being the direct distance between Kurt and Riley's houses.
Using Pythagoras identity in the right triangle with direct distance d , then
d² = 6² + 8² = 36 + 64 = 100 ( take square root of both sides )
d =
= 10
The distance between their houses in a straight line is 10 miles