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Nutka1998 [239]
3 years ago
7

The denominator of a fraction is three more than its numerator. When both the numerator and denominator are increased by one the

fraction becomes 1/2. What is the original fraction?
Mathematics
1 answer:
horrorfan [7]3 years ago
7 0

Answer:

The original fraction is \frac{2}{5}

Step-by-step explanation:

Let the numerator by X

Denominator is three more than its numerator i.e X +3

When both the numerator and denominator are increased by one the fraction becomes 1/2

\frac{X + 1}{X+3+1} = \frac{1}{2} \\\frac{X+1}{X+4} = \frac{1}{2} \\2X + 2 = X+4\\X = 2

Thus, numerator = 2

Denominator = X +3 = 2+3 = 5

The original fraction is \frac{2}{5}

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Dovator [93]

To get the answer, you need to solve the equation for x = 7.

f(7) = 3/7 + 2 - sqrt(7) - 3.

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If you need to simplify it further:

= -4/7 - sqrt(7).

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7 0
3 years ago
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Three quarter of the students running a 100-yard race finished with an average time of 16 seconds. The remaining 25% of students
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Answer:

15 seconds

Step-by-step explanation:

Because the split id 25% and 75%, we could create another average pretending that there are four kids, one who ran in 12 seconds, and three who ran in 16.

Equation for averages: (a₁ + a₂ + a₃ + ... a_{n})/ n

Plug in:<em> (12 + 16 + 16 + 16)/4</em>

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3 years ago
1.)Which equation will result if the substitution method is used to solve the following system of linear equations?
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Question 1: (y+2)=y=6
2) (-4,3)
8 0
3 years ago
A piece of paper graph y=-3x-2
Dmitry_Shevchenko [17]

Answer:

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Step-by-step explanation:

3 0
3 years ago
I need help on this question, someone please help!!
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Answer:

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Step-by-step explanation:

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So, swap the variables: y=8x−1/3x+1 becomes x=8y−1/3y+1.

Now, solve the equation x=8y−1/3y+1 for y.

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7 0
3 years ago
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