RS has endpoint R(2,4) and S(-1,7).what are the coordinates of its midpoint M

M={½,11/2}

Step-by-step explanation:

M={x1+x2/2,y1+y2/2}

M={2+-1/2,4+7/2}

M={½,11/2}

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: