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madam [21]
3 years ago
10

Louis wants to carpet the rectangular floor of his basement. The basement has an area of 980 square feet. The width of the basem

ent is 1/5 its length. What is the length of Louis's basement?
Mathematics
1 answer:
Serhud [2]3 years ago
4 0
This problem requires a system of equations.

Let x be the length and y be the width.

xy = 980               x = 5y

Substitute 5y for x.

5y(y) = 980
5y² = 980
y² = 980/5
y² = 196
y = √196
y = 14 feet

Substitute 14 for y.

x = 5y
x = 5(14)
x = 70 feet

The length is 70 feet.
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Step-by-step explanation:

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8 0
3 years ago
At a bake sale, as student spent $11.00 buying 3 brownies and 5 cookies. His friend spent $3.95 buying 1 brownie and 2 cookies.
dybincka [34]

Answer:

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Step-by-step explanation:

Let "b" be the price of 1 brownie and "c" the price of 1 cookie.

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His friend spent $3.95 buying 1 brownie and 2 cookies. Symbolicaly,

1 b + 2 c = 3.95

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8 0
3 years ago
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Step-by-step explanation:

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