A triangle has side lengths of (2.6w – 4.2x) centimeters, (1.3w + 8.1y) centimeters, and (3.6y + 9.6x) centimeters. Which expression represents the perimeter, in centimeters, of the triangle? A.7.5wy + 13.5xy
B.11.7y + 3.9w + 5.4x
C. 9.4wy + 13.2.ry – 1.6wx
D.0 -0.6x +17.7y + 3.9w

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

i think the answer is .36

step-by-step explanation:

what i did was only 2.88 divided by 8

step-by-step explanation: