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Brums [2.3K]
3 years ago
8

Use the substitution method to solve the system of equations. Choose the correct ordered pair. 2x + y = 10 y = x – 5 A. (5, 0) B

. (7, 2) C. (9, –8) D. (8, –6)
Mathematics
2 answers:
erica [24]3 years ago
8 0
It would be A.) (5,0)
antiseptic1488 [7]3 years ago
3 0

Answer:

A ) ( 5 ,0 ) .

Step-by-step explanation:

Given  : 2x + y = 10

y = x – 5.

To find : Use the substitution method to solve the system of equations.

Solution  : We have given

2x + y = 10 -------(1)

y = x – 5---------(2).

Plug y = x -5 in equation 1

2x + x - 5  = 10 .

3x -5 = 10 .

On adding both sides by 5 .

3x = 10 + 5 .

3x = 15

On dividing by 3 both sides

x = 5 .

Now,  plug x = 5 in equation 2

y = 5 -5

y= 0 .

( 5 ,0 )

Therefore, A ) ( 5 ,0 ) .

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Read 2 more answers
I need solution to these two questions please
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Answer:

Step-by-step explanation:

4). Given functions are,

   f(x)=\frac{1}{3x}

   For x=\frac{1}{12}

   f(\frac{1}{12})=\frac{1}{3(\frac{1}{12})}

             =\frac{1}{\frac{1}{4}}

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   g(x)=\frac{1}{x^2}

   For x=\frac{1}{5},

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           =\frac{1}{\frac{1}{25}}

<em>            </em>=25

<em>   </em>f(\frac{1}{12})-g(\frac{1}{5})=4-25

<em>                        </em>=-21

5). f(x) = -2x² + 3x - 8

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                = -2k² - 13k - 28

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