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labwork [276]
2 years ago
6

D is not the answer

Mathematics
1 answer:
Georgia [21]2 years ago
4 0
The answer is b 5x-y=7 2x+y=0
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How do you solve this equation: -2m+3=|15+m|
Elden [556K]

Any number inside the modulus sign becomes positive. This means |15+m|=|-(15+m)|=|-15-m| and so we have,

-2m+3=|15+m| \Rightarrow \left \Big\{ {{-2m+3=15+m} \atop{-2m+3=-15-m}} \right

Solving these gives us

-2m+3=15+m \Rightarrow m=-4

-2m+3=-15-m \Rightarrow = m=18

However if we check the second solution in the original equation we obtain -2(18)+3=|15+18| \Rightarrow -33=33. This is false and so m=18 can't be a solution.

Therefore the only solution is m=-4.

(Note: I'm not sure why the second solution didn't work but when there's a modulus sign involved it always pays to check your final answers to be sure. I'll have a think about it but in case you find out before I do, I'd be interested to know in the comments.)

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3 years ago
“baka”<br> ,killua zoldyc
adell [148]
What is the question??
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3 years ago
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.I want a way to solve this question​
Verdich [7]

Check the picture below.

so then γ ≈ 180 - 69 - 43, γ ≈ 68.

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2 years ago
What is the distance between Point A and Point B?
Lelechka [254]

Answer:

"2 units" is the answer.

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Answer:

2

Step-by-step explanation:

rise over run = y/x

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