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Vesnalui [34]
3 years ago
8

Please show work

Mathematics
1 answer:
Anit [1.1K]3 years ago
6 0

(1)

since both equations express y in terms of x, equate the right sides

- 2x = - 4x + 10 ( subtract 4x from both sides )

2x = 10 ( divide both sides by 2 )

x = 5

substitute x = 5 into y = - 2x → y = - 10

solution is : (x, y ) → (5, - 10 )

(2)

equate the right sides of both equations

3x = 2x - 7 ( subtract 2x from both sides )

x = - 7

substitute x = - 7 into y = 3x → y = - 21

solution is : (x, y) → (- 7, - 21)

(3)

substitute y = - 8 into the other equation

- 8 = 6x + 22 ( subtract 22 from both sides )

- 30 = 6x ( divide both sides by 6 )

x = - 5

solution is : (x, y ) → (- 5, - 8 )



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C & D

Step-by-step explanation:

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What is the quotient (x3 + 8) ÷ (x + 2)? x2 + 2x + 4 x2 – 2x + 4 x2 + 4 x2 – 4
MissTica

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Step-by-step explanation:

The given expression is

\frac{x^3+8}{x+2}

Recall and use the following property to factor the numerator;

a^3+b^3=(a+b)(a^2-ab+b^2)

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Simplify;

\frac{x^3+2^3}{x+2}=x^2-2x+4

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At the Roberts family reunion, there are 48 men. The ratio of men to women is 6.5. How many women are at the reunion
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Step-by-step explanation:

Question: 5 - 7(z+1) = 7(-9-3z)

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X +30=2X-4 <br> solve x<br><br><br><br> .<br> .
MArishka [77]

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Step-by-step explanation:

Let's solve your equation step-by-step.

x+30=2x−4

Step 1: Subtract 2x from both sides.

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