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3 years ago

I need help with number 33!!!

Mathematics

1 answer:

sveta [45]3 years ago

5 0

Area of Big Rectangle Area of Small Rectangle

A = L x w A = L x w

= (25 + 2w)(10 + 2w) = 25 x 10

= 250 + 50w + 20w + 4w² = 250

Big - Small

74 = 250 + 70w + 4w² - 250

74 = 4w² + 70w

0 = 4w² + 70w - 74

= 2(2w² + 35w - 37)

= 2[2w² -2w | +37w - 37]

= 2[2w(w - 1) | +1(w - 1)]

= 2(2w + 1)(w - 1)

0 = 2 0 = 2w + 1 0 = w - 1

FALSE so disregard w = -1/2 w = 1

NEGATIVE so disregard

Answer: 1 meter

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