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Katyanochek1 [597]
2 years ago
12

Carpet costs $15 per square yard. If a room is 12 feet by 21 feet, how much will it cost to carpet the room?

Mathematics
1 answer:
Lelechka [254]2 years ago
4 0

Answer:

$420

Step-by-step explanation:

First convert the room measurements from feet to yards to match the unit of measure of the carpet.

Room size is 12 feet by 21 feet.

3 feet = 1 yard.

12/3 = 4 yards

21/3 = 7 yards

4 yards times 7 yards = 28 square yards

28 square yards times $15 per square yards = $420.

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Step-by-step explanation:

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So,

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2. Find the GCF of 13 and 52:

13=\underline{13}\\ \\52=2\cdot 2\cdot \underline{13}\\ \\GCF(13,52)=13

So,

13+52=13\cdot 1+13\cdot 4=13\cdot (1+4)

3. Find the GCF of 15 and 81:

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15+81=3\cdot 5+3\cdot 27=3\cdot (5+27)

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64=\underline{2\cdot 2}\cdot 2\cdot 2\cdot 2\cdot 2\\ \\28=\underline{2\cdot 2}\cdot 7\\ \\GCF(64,28)=2\cdot 2=4

So,

64+28=4\cdot 16+4\cdot 7=4\cdot (16+7)

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