Mathematics: Arectangle has a area of 45 square units.the length is 4 units less than the width.what are the dimensions of the rectangle

Arectangle has a area of 45 square units.the

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alinadancer2717

01.06.2020

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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Ответ:

ciaraberger

20.03.2020

Mathematics

$answer = 32.8 \\ solution \\ \frac{39}{y} + 5y \\ = \frac{39}{5} + 5 \times 5 \\ = \frac{39}{5} + 25 \\ = \frac{39 + 25 \times 5}{5} \\ = \frac{39 + 125}{5} \\ = \frac{164}{5} \\ = 32.8 \\ hope \: it \: helps$

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Arectangle has a area of 45 square units.the length is 4 units less than the width.what are the dimensions of the rectangle

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