Question

If the mean of x and 4x is 10, the x = ?
Please explain how you got your answer.

Answer 1

x = 4

Explanation:

To find the mean of two numbers, you have to add the numbers, then divide by 2.

So, if 10 is equal to the mean of x and 4x, it is equal to the sum of 4x and x divided by 2. If we put this in the form of an equation, we get:

`(x + 4x)/(2) =10`

Now we can multiply both sides by 2, and get:

`x + 4x = 20`

Simplify the left side to:

`5x = 20`

And lastly, divide both sides by 5:

`x = 4`

Answer 2

Answer: x = 4

Step-by-step explanation: The mean is the average of the given numbers, so take the numbers add them up and divide by the quantity of numbers. To get the answer to this question, you know the mean is 10 and you have two numbers. You take the 10, multiply it by 2 and you get how much the numbers add up to. You can combine x and 4x to get 5x. 5x=20. Divide 20 by 5 and you get the answer of x=4