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25-01-2021
Mathematics

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The area ( l x w ) of the postcard is 24 square inches. What is the width b of the message (in inches)?

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25-01-2021

area = (l)(w)(h)

24 = 4(3 + b)

24 = 12 + 4b

-12 on both sides

12 = 4b

/4 on both sides

b = 3 inches

Substitute b = 3 inches in width

3 + b

3 + 3 = 6 inches

Answer:

width = 6 inches

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