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sasho [114]
3 years ago
5

Complete the rational operation

D%7B5%7D%20" id="TexFormula1" title=" \frac{3}{x - 5} - \frac{x}{5} " alt=" \frac{3}{x - 5} - \frac{x}{5} " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
prisoha [69]3 years ago
6 0
We have
                             3 / (x-5) - x/5
We make the GCF and we have
                                    15/[ 5(x-5) ] - x(x-5)/[ 5(x-5)]
                                  = [ 15 - x(x-5) ]  [5(x-5)]
                                  = [ 15 - x^2 + 5x] / [ 5 (x-5) ]
                                  = [15 - x^2 + 5x]/[5x - 25]
An answer to your question is (15-x^2+5x)/(5x-25)
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Step-by-step explanation:

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3 years ago
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2 years ago
The value of a book is $150 and decreases at a rate of 4% per year. Find the value of the book after 12 years
nevsk [136]
If it decreases at 4% every year, then its value becomes:

100% - 4% = 96% = 96/100 = 0.96

At the end of the 1 year its value becomes:  150*(0.96)

At the end of the 2 years its value becomes:  150*(0.96)*(0.96) = 150*(0.96)²

At the end of the 3 years its value becomes:  150*(0.96)*(0.96)*(0.96) = 150(0.96)³

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<span>≈ 91.91

Value at the end of 12 years becomes ≈ $</span><span>91.91

I hope this helps.
</span>
8 0
3 years ago
Margie says the set of numbers, 0.1, -1, -2 1/4, 3, are in order from least to greatest. What is her error?
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She also thought the larger the negative the greatest one. The smaller negative is the greatest because it's bellow 0.

To solve this you would first need to turn 1/4 into 0.25

It would start out with -2 cause that is the least. Then -1. Now its back to positive so the least to greatest would be normal.

So the real answer would be -2, -1, 0.1, 1/4

7 0
3 years ago
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