Question about The Learning Company Achieve! Math & Science Grades 1-3 (381933) for PC, Mac

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1.15x² -26x + 8

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What's the question?
If you're asking for the roots, they're about 0.312 and 22.3
If you're asking for the derivative, it's 1.15x - 26

Posted on Dec 08, 2014

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How do you find 9 is 15% of what number using a proportion with the fraction 15/100 and cross mutiply to slove it


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Multiply both sides by 100x:

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When an amount is increases by 15% it becomes $117300. Find rthe original amount.


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Let us call the initial amount, x.

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