Answer:
Length = 10 inches
width = 25 inches
Step-by-step explanation:
Let the length of the rectangle be X inches
width = (3x - 5) inches
Perimeter of rectangle = 70 inches
2 * ( l + b) = 70
2 * ( x + 3x - 5) = 70
4x - 5 = 70 / 2
4x - 5 = 35
4x = 35 + 5
4x = 40
x = 40/4
x = 10
width = 3x - 5 = 3*10 - 5 = 30- 5 = 25 inches
1x^2 -6=5x
1x-6=5x
-6=4x
-6/4x= -1.5
(3,4)
The solution of the linear system is:
and
The following linear equation is solved as follows:
After some algebraic manipulation:
And finally,
8.67 (rounded to the nearest tenth)