SOLUTION: a point with coordinates (x,y) is randomly selected such that 0 <= x <=10 and 0<=y <=10. what is the probability that the coordinates of the point will satisfy 4X + 5Y >=20?

Question 328834: a point with coordinates (x,y) is randomly selected such that 0 <= x <=10 and 0<=y <=10. what is the probability that the coordinates of the point will satisfy 4X + 5Y >=20?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Graph the feasible region.

The area of the triangle is

This area is function the region where .
The area of the square is

So the probability that a random point will satisfy is equal to

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