Simplifying-
(6d^2)(-7d)=
= -(42d^2)(d)
=-42d^3
Answer:
W=4 l=16
Step-by-step explanation:
Let w = width
Let l = length
Since the length is 4 times the width, l=4w
Perimeter of rectangle = 2l + 2w
= 2(4w)+2w
=10w
The perimeter of the rectangle =40, so
40=10w and w=4
Plug w into the length equation : l=4w=4(4)=16
A
C
D
E
F
B should be the obvious no-no