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Anton [14]
3 years ago
7

Please help answer number 12

Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

sorry i dont know the answer

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If the numerator and denominator of the fraction is increased by 2an1 respectively; it becomes3/4 if the numerator and the denom
ipn [44]

Answer:

The fraction is\frac{7}{1}

Step-by-step explanation:

Let the numerator be x and denominator be y

So, Fraction = \frac{x}{y}

Now we are given that numerator and denominator of the fraction is increased by 2 and 1 respectively. it becomes 3/4

So, Fraction becomes :\frac{x+2}{y+1}=\frac{3}{4}

4(x+2)=3(y+1)

4x+8=3y+3

4x-3y+5=0----1

We are also given that the numerator and the denominator are decreased by 2 and 1 respectively , it becomes 1/2

So, Fraction becomes :\frac{x-2}{y-1}=\frac{1}{2}

2(x-2)=y-1

2x-4=y-1

2x-y-3=0 ---- 2

Substitute the value of y from 2 in 1

4x-3(2x-3)+5=0

4x-6x+9+5=0

14=2x

7=x

Substitute the value of x in 2

2(2)-y-3=0

4-3=y

1=y

So, Fraction = \frac{x}{y}=\frac{7}{1}

Hence The fraction is\frac{7}{1}

7 0
3 years ago
The number of State Parks in California is 36 more than one third the number of State Parks in Florida. There are 85 State Parks
romanna [79]
F/3+36=c  subtract 36 from both sides

f/3=c-36  multiply both sides by 3

f=3c-108
4 0
3 years ago
Jason begins at the start of a path Andy rides his bike 11 1/2 miles on the path. The path is 12 1/4 miles long. What is the dis
Damm [24]
3/4 of a mile until he reaches the end of the path.

Hope this helps.
3 0
3 years ago
The expression (x3)(x-15) is equivalent to xn. What is the<br> value of n?
Wittaler [7]

Answer:

-45 is xn

The x=3 and x=-15 multiply them together which is the answer to xn

5 0
3 years ago
There are apples in a basket. Of these apples are green. The rest of them are red. (a) What is the ratio of green apples to red
Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

11-3=8 red apples.

A. 8 to 11

B. 8 to 3

8 0
3 years ago
Read 2 more answers
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