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Marrrta [24]
3 years ago
5

The area of a rectangular room is 750 square feet. The width of the room is 5 feet less than the length of the room.

Mathematics
1 answer:
Gelneren [198K]3 years ago
6 0

Answer:

B. y² – 5y = 750

C. 750 – y(y – 5) = 0

E. (y + 25)(y – 30) = 0

I'm assuming the 2 in the second option is supposed to be an exponent.

Step-by-step explanation:

Length = y

Width = y-5

Length × Width = Area

Area = <u>y(y-5)</u> = 750

<u>Distribute.</u>

y²-5y=750 (B is correct)

<u>If you factor the equation above</u>

(y + 25)(y – 30) = 0 (E is correct)

Area = y(y-5) = 750

<u>Subtract y(y-5) from both sides.</u>

750-y(y-5) = 0 (C is correct)

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I: 12x-5y=0
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with I:
12x=5y
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-> substitute x in II:
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(25/144)y^2+10y+144+y^2-10y+25=169
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