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Scrat [10]
3 years ago
10

If 2x + 5y = 21 and x + y = 3, then what is the solution

Mathematics
1 answer:
Viefleur [7K]3 years ago
8 0
2x+5y=21, x+y=3
y=3-x
2x+5y=21
2x+5(3-x) =21
2x+15-5x=21
2x-5x+15=21
-3x+15=21
-3x=21-15
-x=6/3
-x=2
x=-2

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faust18 [17]

Answer:

answer to the equation is

y = 2x + 11

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y = mx + b

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Author answered 85 out of 95 questions correctly on his math exam.Miguel answered 64 out of 76 questions correctly on his histor
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In this case, you need to find the percentage each student got, then find who received a higher score.

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Fourth Step: As 89.47% is greater, Author got an higher score.

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Answer:

Step-by-step explanation:

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