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kykrilka [37]
3 years ago
6

2x-y=10 y=-4x+2 substitution method

Mathematics
1 answer:
AlladinOne [14]3 years ago
5 0

Answer:

the solution is (2, -6)

Step-by-step explanation:

Substitute the second equation into the first, replacing y in the first:

2x - (-4x+2) = 10

Simplifying, we get:

2x + 4x - 2 = 10, or:

6x = 12, which yields x = 2.

Substituting 2 for x in the second equation yields y = -4(2) + 2 = 0, or y = -6

Then the solution is (2, -6).

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Answer:each box cost =$3

Step-by-step explanation:

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Amount actually used up buying costume boxes =$40-$4=36

Since she bought 12 boxes , each box cost =$36/ 12=$3

5 0
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Answer:

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Step-by-step explanation:

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3 years ago
(3 1/2 - 9 3/4) divided by (-2.5)
SVEN [57.7K]

Answer:

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Step-by-step explanation:

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