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ra1l [238]
3 years ago
14

If 1 is added to the numerator and to the denominator of a fraction,the value obtained is 4/5.If 5 is subtracted from it's numer

ator and from it's denominator, the resulting value is 1/2.Find the fraction.

Mathematics
1 answer:
Step2247 [10]3 years ago
4 0
Let n and d represent the numerator and denominator of the fraction.
.. (n +1)/(d +1) = 4/5
.. (n -5)/(d -5) = 1/2
Eliminating fractions from these equations gives
.. 5(n +1) = 4(d +1)
.. 2(n -5) = (d -5)
Subtracting the first equation from 4 times the second gives
.. 4(2(n -5)) -(5(n +1)) = 4(d -5) -(4(d +1))
.. 8n -40 -5n -5 = 4d -20 -4d -4
.. 3n = 21
.. n = 7
.. 2(7 -5) = d -5
.. 9 = d

The fraction is 7/9.

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7 0
3 years ago
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Find the product ( x ≠ ? )
dsp73

Answer:

-3

Step-by-step explanation:

if x= -3

the denominator becomes 0 and the fraction becomes undefined.

8 0
3 years ago
Emma is building a wall around her garden. It has taken 45 minutes,and she is 75% done. What is the total time it will take Emma
Morgarella [4.7K]
Hey there,
It take 45 min to complete 75% of the wall
1% = 45 / 75
      = 0.6
100 % = 0.6 x 100
           = 60 min
It takes her 60 mins or 1 hour to finish building the wall.

Hope this helps :))

~Top♥
5 0
2 years ago
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PLEASE ANSWER FAST!<br> Find the surface area of the solid.
Rudiy27

Answer:

270 ft^2

Step-by-step explanation:

find the area of each side

top: 13x7=91

triangle shaped sides(both together): 12x5=60

tiny vertical side: 7x5=35

bottom: 12x7=84

add them all together to get the total surface area is 270ft^2

Hope this helps! :)

6 0
2 years ago
What does 125 have in common with a^3 when 125 is written as a power?
mestny [16]

125

2

3

Rewrite  

2

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as a product.

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125

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3

)

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5

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Raise  

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25

5 0
2 years ago
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