B. 25
16 divided by 0.64 (the percentage as a decimal) = 25
5x = 2x-15
3x = -15
x = -5
substitute x = -5 into one of your equations
so y = 5x becomes y = 5 x -5
y= -25
x=-5 and y=-25
Answer:

Step-by-step explanation:


9514 1404 393
Answer:
205 ft
Step-by-step explanation:
Let w represent the width of the rectangle. Then the length is (6w-17) and the area is ...
A = LW
7585 = (6w-17)(w)
6w² -17w -7585 = 0
Perhaps most straightforward is using the quadratic formula to solve this.
For ax² +bx +c = 0, the solution is x = (-b±√(b²-4ac))/(2a). For the above quadratic, the solution is ...

The width is 37 feet, so the length is ...
6(37) -17 = 205 . . . feet
The length of the rectangle is 205 feet.
1. x=5/2
2. x=3/4-3/4y
y belongs R