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Whitepunk [10]
3 years ago
7

Simplify 3x+5y-x+2y please

Mathematics
2 answers:
Svetlanka [38]3 years ago
6 0

Answer:

2x + 7y

Step-by-step explanation:

3x + 5y - x + 2y

Arrange it to be simplified easier,

3x - x + 5y + 2y

3x - x = 2x

5y + 2y = 7y

2x + 7y

xxTIMURxx [149]3 years ago
6 0

Answer:

2x+7y

Step-by-step explanation:

<u>3x</u>+5y<u>-x</u>+2y =

<u>3x-x</u> = 2x

5y+2y = 7y

3x+5y-x+2y = 2x+7y

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Shreya and beth each improved their yards by planting rose bushes and ornamental grass. They brought their supplies from the sam
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Answer:

  • <u><em>The cost of one rose bush is $ 9 and the cost on one bunch pf ornamental grass is $ 8.</em></u>

Explanation:

Name the variables and build a system of two equations with two unknowns.

<u>1. Variable r</u>: cost of one rose bush

<u>2. Variable g</u>: cost of one bunch of ornamental grass.

<u>3. First equation</u>:

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        4r + 4g = 68

<u>4. Second equation</u>:

  • Beth spent $115 on 11 rose bushes and 2 bunches of ornaments grass.

  • 11r + 2g = 115

<u>5. System of equations</u>:

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  • 11r + 2g = 115     equation 2

<u>6. Solve the system</u>

a) Divide the equation 1 by 2:

  • 2r + 2g  =  34     equation 1a
  • 11r + 2g = 115     equation 2

b) Subtract equation 1a from equation 2:

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  • 9r = 81
  • r = 81 / 9
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c) Substitute the value of r into the equation 1a:

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  • g = 17 - 9
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<u>7. Conclusion</u>:

The cost of one rose bush is $ 9 and the cost on one bunch pf ornamental grass is $ 8.

7 0
3 years ago
Explain in a complete sentence if the point (2,-4) is the solution to the system of equations. Show your work in the space provi
slavikrds [6]

Answer:


Step-by-step explanation:

2x - y = 8

<u> x + y = - 2 </u>

3x       = 6

3x /3    = 6/3   Dividing bot sides by 3 to find x.

x = 2

Plug in the value of x to find y.

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-y = 8 - 4

- y = 4

y = -4

The solution: ( 2, -4)

8 0
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