Question

- A store is located at P(50, -30). How long will it take a truck driving at

50 miles per hour to drive from warehouse N to this store?

Answer 1

0.8 hour

Explanation:

Given data

Coordinate

P(50, -30)

Say Wharehouse N has a coordinate of N(0,0)

We can find the distance between two coordinate by

d=√((x_2-x_1)²+(y_2-y_1)²)

d=√((50-0)²+(-30-0)²)

d=√50²+(-30)²)

d=√2500-900

d=√1600

d= 40 miles

We know that

Speed= distance/time

50= 40/t

t= 40/50

t= 0.8 hour