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Aleksandr-060686 [28]
3 years ago
8

Please answer quickly!!!

Mathematics
1 answer:
mixas84 [53]3 years ago
3 0

Answer:

Step-by-step explanation:

5x + 13y = 232

12x + 7y = 218

For each choice:

a) The first equation can be multiplied by –13 and the second equation by 7 to eliminate y. So we have

- 65x - 169y = - 3016

84x + 49y = 1526

Can not eliminate x and y.

b) The first equation can be multiplied by 7 and the second equation by 13 to eliminate y. So we have

35x  + 91 y = 1624

156x + 91y = 2834

Can not eliminate x and y if we ADD.

<em>(If we subtract, this is Yes)</em>

<em></em>

c) The first equation can be multiplied by –12 and the second equation by 5 to eliminate x.

-60x - 156y = - 2784

60x + 35y = 1090

The answer is YES

d) The first equation can be multiplied by 5 and the second equation by 12 to eliminate x.

25x + 65y = 1160

144x + 84y = 2616

Can not eliminate x and y

The final answer is C

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5x - 6 = -16 (Show work)
zysi [14]
  • <em>Answer:</em>

<em>x = - 2</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>5x - 6 = - 16</em>

<em>5x = - 16 + 6</em>

<em>5x = - ( 16 - 6)</em>

<em>5x = - 10</em>

<em>x = - 10 : 2</em>

<em>x = - 2</em>

<em>Good luck ! </em>

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Graph the equation to solve the system. y=2x+7 1/2y=x+7/2
vlabodo [156]

Given equation is y=2x+7 and \frac{1}{2}y=x+\frac{7}{2}

Let's simplify the 2nd equation \frac{1}{2}y=x+\frac{7}{2} before we can start graph so that calculation will be easy

\frac{1}{2}y=x+\frac{7}{2}

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2*\frac{1}{2}y=2*x+2*\frac{7}{2}

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which is exactly same as the first equatoin so graph of both will be exactly same and solution will be infinitely many solutions.

y=2x+7 has y-intercept 7 so first point will be (0,7). Slope is 2 so rise 2 unit up then 1 right and graph the new point.


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Answer:

You will learn it in school

Step-by-step explanation:

LISTEN TO THE TEACHER

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