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KatRina [158]
2 years ago
5

-4x + y = -9 - 5x + 2y = 3 : Solve the Linear equation

Mathematics
1 answer:
Yuri [45]2 years ago
6 0
-4x+y= -9 can be turned into
y= -9 + 4x

5x+2y=3 (plug y in)
5x+2(-9+4x)=3
5x-18+8x=3
5x+8x=3+18
13x=21
divide 13 on both sides
x=1.6
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I want to install carpet in my living room, which is 200 inches long and 50 ft wide. The carpet is sold for 5000 naira per yard2
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Answer:

462962.96 naira

Step-by-step explanation:

This problem is complicated by the use of two different units.  I chose to use inches for the dimensions of the carpet.

200 in long

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Area = 200 x 600 = 120000 in^2

A square yard is a square 36 in. x 36 in. = 1296 in^2

Divide 120000 by 1296 to find out how many square yards of carpet you'll need.

120000 / 1296 = 92.59

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2 years ago
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vladimir1956 [14]

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Step-by-step explanation:

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3 years ago
Could someone please explain to me how to do this!
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Read 2 more answers
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