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koban [17]
3 years ago
7

Solve the system of equations using substitution.

Mathematics
1 answer:
Radda [10]3 years ago
6 0

Answer:

C. No solution.

Step-by-step explanation:

y = −2x + 1

4x + 2y = −1

Substituting y = -2x + 1 in the second equation:

4x + 2(-2x + 1) = -1

4x - 4x + 2 = -1

2 = -1  which is  absurd so there is no solution.

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How many solutions for linear equation 3x + 5y = 25 can be found so that −20 < y < 10, and x is an integer?
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Answer:

50

Step-by-step explanation:

3x = 25 - 5y

-100 < 5y < 50

-50 < -5y < 100

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-8.333 < x < 41.667

41+8+1 = 50

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Is this the full question that is stated?

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svlad2 [7]
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Translating this to mathematics:

16x - 4 = 208

add 4 to both sides.

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3 years ago
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insens350 [35]

Answer:

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