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2 years ago

10

Jayce made a scale drawing of the elementary school. He used the scale 7 centimeters = 1 meter. What is the drawing's scale fact

or? Simplify your answer and write it as a fraction.

1 answer:

galben [10]2 years ago

4 0

Answer:

Is this multiple choice or do you have to do it on your own with your own answer?

Step-by-step explanation:

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How many ml of 20 percent acid should be added to pure acid to make 70 ml of 30 percent acid?

Novay_Z [31]

Answer:

61.25%

Step-by-step explanation:

How many ml of 20 percent acid should be added to pure acid

to make 70 ml of 30 percent acid?

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let x = amt of 20% mixture

then

(70-x) = amt of pure acid

:

0.20x + (70-x) =0 .30(70)

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= 21 - 70

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