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storchak [24]
2 years ago
10

I have tried solving and constantly find myself stuck someone please help my test is tomorrow!!!​

Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
7 0

Answer:

Is The Test On An Ipad? Or Computer?

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Please help me I don’t know how to solve it and will mark brainiliest
Sindrei [870]

Answer: One plain roll is 4 dollars and one shiny roll is 6 dollars.

Step-by-step explanation:

lets start by saying

rolls of plain wrapping paper = x

rolls of shiny wrapping paper = y

Kathryn sold 4 plain rolls and 3 shiny rolls for 34 dollars.

4x+3y=34

Eugene sold 4 plain rolls and 2 shiny rolls for 28 dollars

4x+2y=28

Both equations will look like this.

4x+3y=34

-1(4x+2y)=(28)-1

we can multiply the second equation by -1 to get y alone. (doesn't matter which equation). Once you do that, the positive 4x and the negative 4x cancel out, 3y-2y=1y and 34-28=6. you are left with

1y=6 so one shiny roll is 6 dollars.

now use that price to find the cost of the plain roll.

lets use Kathryn's equation

4x + 3(6)=34

4x + 18= 34

      -18  -18

4x=16. Divide by 4 to find cost of one plain roll.

16÷4=4. One plain roll costs 4 dollars.

Lets check. Using Kathryn's equation,

4(4) + 3(6)=34

16+18=34

34=34. We are right.

3 0
3 years ago
Find the inverse function of F(x) = 1/2x-6​
DIA [1.3K]
F^-1 (x) = 2x + 12 hope it help
5 0
3 years ago
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Calculate:1 1/3 x 2/4
labwork [276]

Answer: 0.66666666666

Step-by-step explanation: just a calculator ez

6 0
2 years ago
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G(x)=x^2 −4x+3; Find g(−1)
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Answer:

8

Step-by-step explanation:

6 0
3 years ago
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Find the value of x<br><br><br><br><br><br> x=?
soldi70 [24.7K]

Answer:

x = 135 degrees

Step-by-step explanation:

For any simple n-gon, the sum of the interior angles is 180(n − 2) degrees. (n is the number of vertices)

180(6-2)=180(4)=720

the shape already has 2 90-degree angles, subtract both of those from total interior angle sum

720-90-90=540

the 4 angles left must make up 540 degrees

540/4=135

x=135 degrees

4 0
2 years ago
Read 2 more answers
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