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kirill [66]
3 years ago
6

Which equation shows y+15=3x in standard form?

Mathematics
1 answer:
babunello [35]3 years ago
4 0

Answer:

Option A is correct.

15x-5y=1

Step-by-step explanation:

The standard of any equation is in the form of:

Ax+By = C

Given the equation: y+\frac{1}{5} = 3x

Multiply both sides by 5 we get;

5y+1 = 15x

Subtract 5y from both sides we get;

1 = 15x-5y

or

15x-5y=1

Therefore, the equation y+\frac{1}{5} = 3x in standard form is 15x-5y=1

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In a pile of coins there are 7 more quarters than nickels. If there is a total of$2.65 in coins, how many quarters are there?
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Gwar [14]

Answer:

x = -8

Step-by-step explanation:

x = 2y - 4 --- Equation 1

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I will be using the substitution method to solve this.

Substitute x = 2y - 4 into Equation 2:

7x + 5y = -66

7(2y - 4) + 5y = -66

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19y - 28 = -66

Isolate 19y.

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y = -38 ÷ 19

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