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3 years ago

If 20 is added to one-third of a number, the result is the double of the number. What is the number?

2 answers:

6 0

One third of an unknown number is $\frac{1}{3} x$ . The word "of" means to multiply. So if we add 20 to that, and it is equal to double the unknown (that is 2x), the equation looks like this: $20+ \frac{1}{3}x=2x$ . Start by multiplying everything by 3 to get rid of the fraction and get 60 + x = 6x. Now subtract an x from both sides and get 60 = 5x and x = 12. So the number is 12

Thepotemich [5.8K]3 years ago

3 0

1/3 of an unknown number is 1/3x. The word "of" lets us know to multiply. So if we add 20 to that, and it is equal to double x (that is 2x), the equation looks like this:

1. Start by multiplying everything by 3 to get rid of the fraction and get 20 + 1/3x = 2x.
2. Now subtract an x from both sides and get 60 = 5x and x = 12.
So the answer is 12

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Given:

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To find:

The y-intercept of the given function.

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