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egoroff_w [7]
1 year ago
15

If it is known that a+b/a-b=c, find the following: 2a-2b/5a+5b

Mathematics
1 answer:
sergiy2304 [10]1 year ago
4 0
If (a+b)/(a-b)=c, then (a-b)/(a+b)=1/c
(2a-2b)/(5a+5b)=2(a-b)/5(a+b)=2/5 *1/c=2/(5c)
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Tiffany buys a basket of watermelons on sale for \$9$9dollar sign, 9 before tax. The sales tax is 9\%9%9, percent. What is the t
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Given that the basket of watermelons sells for $9 before tax and the tax rate is 9%.

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Daniel deposited $500 into a savings account and after 8 years, his investment is worth $807.07. The equation A = d(1.005)12t mo
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Step-by-step explanation:

The equation A = d(1.005)^12t modelling the value of Daniel’s investment shows a monthly compounded interest. This means that the interest is compounded 12 times in a year.

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t = 8 years

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The state of Wisconsin would like to understand the fraction of its adult residents that consumed alcohol in the last year, spec
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Answer:

The answer is below

Step-by-step explanation:

What we should do is the following:

First, from the random sample of 852 researchers, it is necessary to obtain the number of adult residents who consumed alcohol in the past year.

After the above, we must calculate the proportion of adult residents who consumed alcohol in the last year by dividing the number of adult residents who consumed alcohol in the last year by 852.

After this, we must compare if the proportion is exactly 70% or different from it.

We have the following hypotheses:

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