Find the mean. {21, 10, 27, 24, 15, 7, 19, 24, 31, 15, 11, 24}​

19 is your answer

Step-by-step explanation:

19

Step-by-step explanation:

The mean of a set of numbers is the sum divided by the number of terms.

How to Find the Mean:

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb