If the average (arithmetic mean ) of 2,7, and x is 12, what is the value of x?

x=27

Step-by-step explanation:

The mean is add all the numbers and divide by the number of points

(2+7+x)/3 =12

Multiply each side by 3

(2+7+x)/3 *3 =12*3

2+7+x = 36

Combine like terms

9+x = 36

Subtract 9 from each side

9+x-9 = 36-9

x = 27

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~