3 years ago

Solve the following system of equations by using the substitution method.

1 answer:

8 0

There appears to be a typing error in the second equation.

Still the answer is (7,10) because it is the only ordered pair that works for the first equation.

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16. Find the value of x* 8. 2x-6 A 10 B 7 C -7 D -10

Vikki [24]

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$2x - 6 = 8$

Add sides 6

$2x - 6 + 6 = 8 + 6$

$2x = 14$

Divide sides by 2

$\frac{2x}{2} = \frac{14}{2} \\$

$x = 7$

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The correct answer is (( B )) .

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2 years ago

Read 2 more answers

Systems of equations, help please?

lord [1]

4x + 3y = 54 (1)
3x + 9y = 108 (2)

Multiply (1) by (-3)
-12x - 9y = -162
3x + 9y = 108
---------------------add
-9x = -54
x = 6

plug x = 6 into (1) to find y
4(6) + 3y = 54
24 + 3y = 54
3y = 30
y = 10

Answer
(6 , 10)

Hope it helps.

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3 years ago