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Zanzabum
2 years ago
5

A store pays$76.40 for a bookcase and marks the price up by 45%.What is the new price?

Mathematics
1 answer:
DerKrebs [107]2 years ago
7 0

Answer:

$110.78

Step-by-step explanation:

$76.40 × 45%

$34.38

$76.40 + $34.38

$110.78

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Write and solve a system of equations. Be sure to label the variables. The sum of two numbers is twelve. Two times the first num
adoni [48]

The solution to the system of equations is x = 8, y = 4.

<h3>How to write the system of equations?</h3>

First, let's define our variables as x and y.

"the sum of two numbers is twelve" is written as:

x + y = 12

"two times the first number minus three times the second number is four" is written as:

2x - 3y = 4

Then the system of equations is:

x + y  = 12

2x - 3y = 4

<h3>How to solve it?</h3>

First, we isolate one of the variables in one equation, I will isolate x on the first one to get:

x = 12 - y

Now we replace this on the other equation, so we get:

2*(12 - y) - 3y = 4

Now we can solve this for y.

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Now we know the value of y, and:

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Then the solution of the system is:

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If you want to learn more about systems of equations, you can read:

brainly.com/question/13729904

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Answer:

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Step-by-step explanation:

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