Answer:
Length: 6 ft
Width: 4 feet
Step-by-step explanation:
Length: L
Width: 2L - 8
2L + 2(2L - 8) = 20
2L + 4L - 16 = 20
6L = 36
L = 36/6
L = 6
W= 2(6)-8 = 4
you are right it is 9
5 x 3 = 15 so you go 3 x 3 which = 9 :)
x = 4.75 or 19/4 or 4 and 3/4
10 - 4x = -9
-10 -10
-4x = -19
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-4 -4
