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3 years ago

3x - 5y = -2

Mathematics

1 answer:

katen-ka-za [31]3 years ago

8 0

<h3>Option B</h3><h3>Multiply first equation by -2 and second equation by 3, solution (1, 1)</h3>

<em><u>Solution:</u></em>

<em><u>Given system of equations are:</u></em>

3x - 5y = -2 -------- eqn 1

2x + y = 3 ------- eqn 2

We have to solve the system of equations

Multiply eqn 1 by -2

-6x + 10y = 4 ------- eqn 3

Multiply eqn 2 by 3

6x + 3y = 9 -------- eqn 4

Add eqn 3 and eqn 4

-6x + 10y = 4

6x + 3y = 9

( + ) ------------

13y = 13

y = 1

Substitute y = 1 in eqn 2

2x + 1 = 3

2x = 2

x = 1

Thus solution is (1, 1)

Thus option B is correct

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4 years ago

Question 11 (Multiple Choice Worth 1 points

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$3\frac{4}{33}=3.\bar1\bar2$

Step-by-step explanation:

Given:

Simplify The given choice.

$3\frac{4}{33}=\frac{33\times 3 +4}{33}=\frac{99+4}{33}=\frac{103}{33}=3.1212121=3.\bar1\bar2$

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Therefore, the first option $3\frac{4}{33}$ is correct.

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4 years ago