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3 years ago

7

The width of a rectangle is 7 inches shorter than its length. The area is 78 square inches. What are the dimensions of the recta

ngle?

1 answer:

harina [27]3 years ago

6 0

Answer:

Step-by-step explanation:W = L - 7

WL = 78

(L-7)L = 78

L^2 - 7L - 78 = 0

Factorize: (L-13)(L+6) = 0

L = 13 or -6

A length cannot be negative, so the length must be 13 miles.

The width is 13-7 = 6 miles.

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vivado [14]

Answer: this is our required factor i.e.

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Explanation:

Since we have given that

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So, we can use this here ,

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Hence this is our required factor i.e.

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3 years ago

Read 2 more answers

The rule for the number of fish in a home aquarium is 1 gallon of water for each inch of fish length. Marta's aquarium holds 39

Karo-lina-s [1.5K]

Answer: Fish A: 9 inches ; Fish B: 6 inches

Step-by-step explanation:

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Plug back in: 3x + 2(6) = 39 → 3x = 27 → x = 9 inches.

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