Answer:
3x +15 = 8x
5x = 15
x = 3
Step-by-step explanation:
Answer:
Step-by-step explanation:
so let’s say x is the length. Then the width will be 3x-4. You add them together and multiply by two. The perimeter is 72 so the equation equala 72.
Equation:
(x+3x-4)*2=72
(4x-4)*2=72
8x-8=72
8x=80
x=10
length:10
width:26
5x+8y=-14
8y = -5x - 14
y = -5/8 x - 14/8
y-intercept when x = 0 so y = -14/8 = -7/4
x-intercept when y = 0 so
-5/8 x - 14/8 = 0
-5/8 x = 14/8
x = 14/8 * (-8/5)
x = -14/5
answer:
y-intercept (0 , -7/4)
x-intercept (-14/5 , 0)
First one is false, second one is true.
