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zysi [14]
3 years ago
15

Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices.

Mathematics
1 answer:
Alona [7]3 years ago
6 0
    8x    -   2y = 5     multiply  by 3
-12x     + 3y  = 7      multiply by 2   giving:-

24x  - 6y  = 15
-24x + 6y = 14

adding these 2 equations:-

0 = 29

This is nonsense So there are no solutions to this system of equatios

Are you sure you have the question right?

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2 years ago
Simplify 4√16 + 8√16
Mumz [18]

4\sqrt{16} + 8\sqrt{16}:

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7\sqrt{4} *3\sqrt{8}

We have \sqrt{4}=2

simplify \sqrt{8} = \sqrt{2^3} = \sqrt{2^2*2}

then the radical rule is used: \quad \sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b}

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2\sqrt{4}+5 \sqrt{9}

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2\sqrt{4}+5 \sqrt{9} = 4+15 = 19

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4\sqrt{5} -2\sqrt{5} = 2\sqrt{5}

since 2\sqrt{5} is the half of 4\sqrt{5}

-----------------------------------------------------------------------------------

-4\sqrt{2}\:+\:5\sqrt{2} =1 \sqrt{2} = \sqrt{2}\\    <em>(-4+5=1)</em>

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Solve for x in the picture below. Thanks! Will give brainliest.
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Answer:

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x=9

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