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algol13
3 years ago
10

9.4.27

Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

  • w=15. l=6

Step-by-step explanation:

l=w-9

w=w

area=90

area=l×w

90 =w(w-9)

90=w²-9w

turn it to a quadriatic equation

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