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Alex777 [14]
3 years ago
9

Natalie is shopping at a used book and music store. A sign advertise 4 cds for $12. What is the unit rate for the cost of 1 cd?

Mathematics
2 answers:
madreJ [45]3 years ago
8 0
The cost for 1 cd would be $3.00. To figure this out divide 12 by 4.
iris [78.8K]3 years ago
3 0
$3 is your qoution if you divide that's how I got $3
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Just substitute the value of x from second equation into first equation:
N = x + y - n = 5
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N = 0 + y - n = 5

In short, N would be equal to y - n which is still equal to 5

Hope this helps!
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RSB [31]

Answer:

Graph dots in the points of the following:

(-4,10)

(-3,8)

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3 years ago
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Nuetrik [128]

Answer:

x = 1, y = -1

Step-by-step explanation:

If we have the two equations:

4x+3y=1 and -3x - 6y = 3, we can look at which variable will be easiest to eliminate.

y looks like it might be easy to get rid of, we just have to multiply 4x+3y=1  by 2 and y is gone (as -6y + 6y = 0).

So let's multiply the equation 4x+3y=1  by 2.

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Now we can add these equations

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Dividing both sides by 5, we get x = 1.

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