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3 years ago

What do you divide 71.2 by to get 7120

Mathematics

2 answers:

Artist 52 [7]3 years ago

7 0

Answer:

506,944

Step-by-step explanation:

7,120 x 71.2 = 506,944 therefore 506,944 / 71.2 = 7,120

Nataly_w [17]3 years ago

5 0

Answer:100

Step-by-step explanation:

71.2×100=7120.

So your answer is 100 confirmed by calculator

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3 years ago

One number is 4 times as large another. The sum of their reciprocals is 45/4. Find the two numbers

Reptile [31]

Let,
the numbers be "x" and "y"
According to the question,
x = 4y ......................................................equation (1)

$\frac{1}{x} + \frac{1}{y}= \frac{45}{4}$ ...................................equation (2)

Taking equation (2)
$\frac{1}{x} + \frac{1}{y}= \frac{45}{4}$

Substituting the value of "x" from equation (1), we get,

$\frac{1}{(4y)} + \frac{1}{y}= \frac{45}{4}$

$\frac{1}{4y} + \frac{1}{y}* \frac{4}{4} = \frac{45}{4}$

$\frac{1}{4y} + \frac{4}{4y}= \frac{45}{4}$

$\frac{1+4}{4y} = \frac{45}{4}$

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Cross multiplying, we get,

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<u />
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$\frac{1}{9} = y$

$y = \frac{1}{9}$

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Taking equation (1)
x = 4y
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So, the numbers are $\frac{1}{9}$ and $\frac{4}{9}$

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