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Oksanka [162]
3 years ago
10

19. Suppose carpet costs $20 per square yard. How much will it cost to carpet

Mathematics
2 answers:
Tom [10]3 years ago
4 0

Answer:

$400

Step-by-step explanation:

12*20=240

8*20=160

240+160= 400

Nataliya [291]3 years ago
3 0
20 x 12 = 240
20 x 8 = 160
240 + 160 = 400
answer is (B)
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For middle term factorization, we need <em>two numbers that multiplied gives us -56 and added gives us 1 (coefficient of n).</em>

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<em>n^{2}+n-56=0\\(n+8)(n-7)=0\\n=-8, 7</em>

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