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alexandr402 [8]
3 years ago
7

How do we figure out the value of a variable?

Mathematics
2 answers:
mafiozo [28]3 years ago
8 0

Answer:

To figure out the value of a variable you plug it into an equation solve for it using the equation around it.

Margaret [11]3 years ago
5 0

Answer:

Step-by-step explanation:

Solve for the unknown variable(number) by moving everything to the other side of the equation.

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Step-by-step explanation:

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a family is building a rectangular fountain in the backyard. the yard is rectangular and measures 8x by 9x. The fountain is goin
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Teachers often all this problem a donut problem because it’s like the donut hole getting cut out of the middle. The way that you solve this is to find the area of the whole yard and subtract the area of the fountain. Since they are rectangles we’re going to use A = LW
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4 years ago
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Mumz [18]

Answer:

An apple costs $2.25. A mango costs $1.25.

Step-by-step explanation:

Let a = price of 1 apple.

Let m = price of 1 mango.

Cameron:

4 apples + 7 mangoes ----> total $17.75

4a + 7m = 17.75

Gavin:

2 apples + 5 mangoes ----> total $10.75

2a + 5m = 10.75

We have a system of 2 equations in 2 unknowns.

4a + 7m = 17.75

2a + 5m = 10.75

We can use the elimination method to eliminate the variable <em>a</em>. Rewrite the first equation. Multiply both sides of the second equation by -2 and write below it. Then add the equations.

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Divide both sides by -3.

m = 1.25

<em>A mango costs $1.25.</em>

Now we use the first equation and substitute 1.25 for <em>m</em> and solve for <em>a</em>.

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Answer: An apple costs $2.25. A mango costs $1.25.

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3 years ago
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Answer:

Sales goal, S = Q. 10,000

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