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DaniilM [7]
3 years ago
12

Don't get it at all need help

Mathematics
1 answer:
Mumz [18]3 years ago
4 0
49. Equation A
50. Equation C
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At the beginning of the school year, 70 students signed up for music lessons. Students could choose drums, guitar, piano, or vio
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By process of elimination its A
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Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is
CaHeK987 [17]

Answer:

The System of equation is x+y=29, 5x + 2y = 100.

Step-by-step explanation:

Given:

Let 'x' be the number of questions worth 5 points.

Let 'y' be the number of questions worth 2 points

Total Number of Problems = 29

So the Total Number of Problems is equal to sum of the number of questions worth 5 points and the number of questions worth 2 points.

Framing in equation form we get;

x+y=29.

Also Given:

Test is of Total Points = 100

Now Total points in test is equal to sum of the number of questions worth 5 points multiplied by  and the number of questions worth 2 points multiplied by 2.

Framing in equation form we get;

5x+2y=100

Hence The System of Equations are \left \{ {{x+y=29} \atop {5x+2y=100}} \right..

7 0
3 years ago
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A bookstore sells books at 25% profit calculate the percentage of sales price to cost price ?
g100num [7]

Answer:

Cost price=100%

Step-by-step explanation:

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3 years ago
8. Write y-x-y-x in simplest form.<br><br><br><br>10 points ​
alisha [4.7K]

Answer:

Easy -2x

Step-by-step explanation:Because both a positive y and a negative y cancle out eachother so all thats left is both of the negative x's

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