starts with 20 smthing x3 +4 = 20 but what is it ???? hmmmm if you think more you can fiqure it out by just finding random numbers so use ur brain i guess???
Answer:
width: 2
length: 10
Step-by-step explanation:
L = 3W + 4
A = LW = (3W + 4) x W
= 3w² +4w
3w² + 4w = 20
3w² + 4w -20 = 0
(w - 2) (3w + 10) = 0
w = 2 or w = - 10/3 (width is positive) ∴ width = 2
length = 3 x 2 + 4 = 10
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