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Alexeev081 [22]
3 years ago
6

What should be done to these equations in order to solve a system of equations by elimination?

Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer

You can multiply the first equation by 4 and the second equation by 3.

You can multiply the first equation by 4/3.

You can multiply the first equation by 3.

Explanation

When solving a system of equations by elimination, you want to add or subtract the equations to "get rid" of a variable.

To do that, one of the variables in both equations have to have the same coefficient.

The first answer possible gives x the coefficient of 12 for both equations. You would get 12x+4y=52 and 12x-9y=39. You could subtract those equations to get 13y=13.

The second way gives x the coefficient of 4. You would multiply the first equation by 4/3 to get 4x+4/3y=52/3. You can subtract to get one variable, and then solve from there. Although, multiplying for 4/3 is annoying, so it's not suggested.

You can also "get rid" the the y. Multiply the first equation by 3 to get 9x+3y=39. You can add these equations. When you add 9x+3y=39 and 4x-3y=13 you get 13x=52.

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Answer:

Each number matches up below. The left side is x, and the right is y.

1 ⇒ 192

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Step-by-step explanation:

We know in 1 serving, there is 192 calories. Following this, to find the calories for 2 servings, we multiply 192 by 2.

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When we know the calories but not the serving, you divide the calories by 192

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olga2289 [7]

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Step-by-step explanation:

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JulsSmile [24]

Answer:

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Step-by-step explanation:

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both sides are equal so we have

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2 years ago
On August 1, 2021, a company accepts an $8,000, 9-month note receivable. For 2021, the company reports interest revenue of $200.
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Answer:

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200 = 8000 * R * 5/12

we solve for R

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