Ask question

Ask question

All categories

3 years ago

7

Please help answer number 12

1 answer:

Dmitry [639]3 years ago

8 0

sorry i dont know the answer

You might be interested in

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