Ke shawn is placing a right triangle in the coordinate plane. he knows that the longer leg is twice the length of the shorter leg. he places the longer leg on the x-axis. what coordinates should he assign to the third vertex of the triangle?

the 3rd vertex is on the x axis line which means Y =0

 since the longer leg is twice as long as the shorter leg and the length of the shorter leg is a, then twice the length would be 2a ( 2 times a)

 so the 3rd vertex is (2a,0)

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it