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aalyn [17]
2 years ago
8

The area of a rectangle is given by the trinomial y^ 2 +4y-45. If the length of the rectangle is y + 9 , what is the width of th

e rectangle?
Mathematics
1 answer:
Tema [17]2 years ago
6 0

Step-by-step explanation:

Area of rectangle =L×W

Width =Area

w idth=  \frac{area \ }{length}  \\  \\width = \frac{ {y}^{2}  + 4y - 45}{y + 9}  \\  \\  =  \frac{(y  - 5)(y + 9)}{(y + 9)}  \\  \\ width = y - 5

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