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KatRina [158]
3 years ago
7

The sum of a number and twice its reciprocal is 27/5. Findthe number.​

Mathematics
1 answer:
vovangra [49]3 years ago
6 0

Answer:

x  , reciprocal= 1/x  

x+2(1/x)=27/5  

x+2/x=27/5  

x^2+2=27/5*x  

x^2-27/5*x+2=0  

(x-5)(x-2/5)=0  

<u><em>x=5, 2/5</em></u>

<u><em></em></u>

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The system of equation to determine the quantity of nickels and quarters is simultaneous equation.

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Step-by-step explanation:

Given

Let n represent number of nickels

Let q represent number of quarters

From line 1 of the question, we understand that

Total coins = 39

So, n + q = 39 because the made up of the nickels and the quarters

It's also stated that the total value of these 39 coins is $6.35.

First, it should be noted that

1 nickel is worth 0.05 and 1 quarter is worth 0.25, we can represent the total value of the coins with the following equation

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At this point, we have two equation such can be solved simultaneously

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Solving further.....

Make q the subject of formula in equation (1)

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Substitute 39 - n for q in equation 2

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Substituton 17 for n in this equation

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