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djverab [1.8K]
3 years ago
13

Three DVDs and four CDs cost $92. Two DVDs and three CDs cost

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

DVD: $16

CD: $11

Step-by-step explanation:

These two linear equations can represent the system of equations where x equals the cost of a DVD and y equals the cost of a CD:

3x+4y=92

2x+3y=65

When graphed, the solution is at (16,11).

Therefore, one DVD costs $16 and one CD costs $11.

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Determine whether the given length can be side lengths of a right triangle. 12m, 60m, 61m
Ne4ueva [31]

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No

Step-by-step explanation:

Using the converse of Pythagoras' identity.

If the longest side squared is equal to the sum of the squares of the other 2 sides then the triangle is right.

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3 years ago
A $525 speaker now sells for $393.75. Find the percent of change.
antiseptic1488 [7]

Answer: 25%

Step-by-step explanation:

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3 years ago
I need help i dont understand this,and j have and i have a big test coming up please help thanks
levacccp [35]
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So, your equation should look like:
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Next, you combine your like terms so that your next move will look like:
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Then you'd follow the subtraction and division property, so your next moves will look as the following:
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3 years ago
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yanalaym [24]

Answer:

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Step-by-step explanation:

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A general equation of the circle is of the form:

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