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Sergeeva-Olga [200]
3 years ago
13

If (a+b) / (x−y) = 3/5 then (10a + 10b) / (9x−9y) = ?

Mathematics
2 answers:
DerKrebs [107]3 years ago
6 0

Answer:

The answer is 2/3.

Step-by-step explanation:

Conformed by RSM.

lbvjy [14]3 years ago
5 0

Answer:

2/3

Step-by-step explanation:

Look at what you are getting on the right hand question. 10a +10b has a common factor that can be pulled out. It is 10

10a + 10b = 10(a + b)

Now look at the denominator

9x - 9y = 9(x -y)

There are a lot of possible answers.

Mine would be to multiply 3/5 * 10/9

\dfrac{3}{5}*\dfrac{10}{9} = \dfrac{30}{45} = \dfrac{2}{3}

so

(10a + 10b)/(9x - 9y) = 2/3

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Austin borrowed money from a credit union for 4 years and was charged simple interest at an annual rate of 5% the total interest
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Given:

Rate of simple interest = 5%

Time = 4 years

Total interest = $160

To find:

The amount borrowed by Austin from a credit union.

Solution:

The formula for simple interest is:

I=\dfrac{P\times r\times t}{100}

Where, P is principal, r is the rate of interest and t is the number of years.

Putting I=160,r=5,t=4 in the above formula, we get

160=\dfrac{P\times 5\times 4}{100}

160=\dfrac{20P}{100}

160=\dfrac{P}{5}

Multiply both sides by 5.

800=P

Therefore, Austin borrowed $800 from a credit union for 4 years.

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Simora [160]

Answer:

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Answer:

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Step-by-step explanation:

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4 0
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Vinvika [58]

Answer:

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Step-by-step explanation:

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2 years ago
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