We can solve this by setting up a system of equations. x and y will represent the two numbers. x+y = 12 x-y = -2 Personally, I'm going to solve the system by solving one of the equations for x and substituting it into the other one. x = 12-y 12-y-y = -2 12-2y = -2 -2y = -14 y = 7
Now find the other number by plugging 7 in for y in one of the equations. x+7 = 12 x = 5 OR x-7 = -2 x = 5
Area of the wall = 8 x 19 = 152 ft square Area of the window = 4 x 5 = 20 ft square Area of 3 windows = 20 x 3 = 60 ft square The percent area of 3 windows from area of the wall = 60/152 or approximately .395 or 39.5%
Step-by-step explanation: A trinomial is a math equation with 3 terms connected by plus or minus notations. In these 4 answer choices, choice B is the only one with 3 terms.
