A box shaped like a rectangular prism has a height of 17 in and a volume of 2,720 in³ The length is 4 inches greater than twice the width. What is the width of the box?
–10 in
8 in (my answer???)
20 in
40 in *
1. C - 30.25
2. B - x = -1
3. D - no solution
4. B - 8 in.
I just took the assessment and got 4/4.
Width = W in.
Length = (2W + 4) in.
V = L * W * h = 2720 n^3.
(2W+4) * W * 17 = 2720
2W^2+4W)*17 = 2720
34W^2 + 68W - 2720 = 0
W^2 + 2W - 80 = 0
-80 =-8*10.
(W-8)(W+10) = 0
W-8 = 0
W= 8
W+10 = 0
W = -10
Use positive value of W: W = 8.
C
B
D
B
4/4 (100%)
8 is correct
C
B
D
B
This is 100% correct for the U4L5 Completing the Square quick check!
THANKS THEDARKONE 100%
C
C
B
D
B
C
C
B
D
B
C
C
B
D
B