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Vlad [161]
3 years ago
10

A rectangle has a area of 45 square units.The length is 4 units less than the width.What are the dimensions of the rectangle

Mathematics
1 answer:
Rom4ik [11]3 years ago
5 0
A = lw 

A= 45 unit²

l= w-4

45= (w-4)w

45=w²-4w

w²-4w-45=0

(w-9)(w+5)=0

w=9, -5 so 9 is the width

l=9-4 =5 is the length

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