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KIM [24]
3 years ago
8

EMERGENCY! Help me with math RN

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

false statement

Step-by-step explanation:

follow these steps

5+x^2=2^2+13

5+x^2-2x^2-13=0

-8+x^2-2x^2=0

-8-x^2=0

-x^2=8

x^2=-8

this statement is false for any value of x because the power function with a even exponent is always postive or 0

Hoped I helped

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Answer:

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Step-by-step explanation

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5 0
3 years ago
In a chemistry lab, you have 2 vinegars. One is 5% acetic acid, and one is 6.5% acetic acid. You want to make 200 ml of a vinega
Iteru [2.4K]
We have 5% and 6.5% acetic acid solutions and we need 200 ml of 6% acetic acid.
Set up two equations:
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A) f + s = 200
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Multiplying equation A by -.05
A) -.05f  -.05s = -10
B) .05f + .065s = 12 then adding both equations:
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<span> <span> <span> we need 133.33</span> ml of 6.5% acetic acid and
66.67 ml of 5% acetic acid solution.
</span> </span>
Source:
http://www.1728.org/mixture.htm


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3 years ago
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Romashka [77]

Answer:

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Step-by-step explanation:

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AD = |-1 - 6| = |-7| = 7 units

\frac{BD}{AD}

Plug in the values

\frac{BD}{AD} = \frac{5}{7}

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