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mojhsa [17]
2 years ago
14

If a number is added yo the numerator of 12/43 and twice the number is added to the denominator of 12/43 the resuliting fraction

is equivalent to 1/3 find the number
Mathematics
2 answers:
DaniilM [7]2 years ago
3 0

Answer:

The number is 7.

Step-by-step explanation:

In this case we have an unkown variable that is a number. We will call this number by "x", this is what we want to calculate. In the first part it is said that the number or x is added to the numerator and in the second part it is said that twice the number is added to the denominator, and that this fraction is equal to 1/3. So we have:

1/3 = (12 + x)/(43 + 2*x)

43 + 2*x = 3*(12 + x)

43 + 2*x = 36 + 3*x

43 - 36 = 3*x - 2*x

x = 7

The number is 7.

Fiesta28 [93]2 years ago
3 0

Answer: 7

Step-by-step explanation:

Let the number be X

When number is added to the numerator of 12/43, the number is 12+X/43 and twice the number is added to the denominator of 12/43, this will give 12+X/43+2X, the resuliting fraction is equivalent to 1/3. Mathematically, this will be

12+X/43+2X = 1/3

Cross multiply

3(12+X) = 43+2X

36+3X= 43+2X

Collected like terms

3X-2X = 43-36

X= 7

The number is 7

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Basile [38]

Hey there!!

Recursive formula :

... a( n ) = a ( n - 1 ) + 7

The first term is 12

To find the second term, we will need to substitute 2 in place of ' n '

2 term :

... a( 2 ) = a ( 2 - 1 ) + 7

... a( 2 ) = a( 1 ) + 7

We know a( 1 ) = 12

... a( 2 ) = 12 + 7

... 19 is the second term and we will need to use this to find the other terms.

Hope my answer helps!

5 0
3 years ago
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3 years ago
Find the inverse function of f(x)=4x-8
kipiarov [429]

Answer:

f^-1(x)=1/4x+2

Step-by-step explanation:

y=4x-8

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x=4y=8

switch sides

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4y=x+8

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3 years ago
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Alenkasestr [34]

Answer:

1. members = $ 160 , non members = $ 80

2. members = $ 168 , non members = $ 120

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For members

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(1) for 4 visits

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So, non member ship is better.    

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GalinKa [24]
2500 is 40% of the 100%
so, from the 40%, figure out 10%
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7 0
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