It means that the sum is a prime number. It says nothing about the individual terms in the sum.
The mean, or the average.
The arithmetic mean.
That's the definition of the "mean" or "average" of that group of terms.
Sum is the same as add (an addition). For example, 5 + 4 = 9 is the sum of 5 and 4.
12(6 + 5)
average or mean
It means that the sum is a prime number. It says nothing about the individual terms in the sum.
sum means the answer of a math problem
The mean, or the average.
The arithmetic mean.
Factor the sum of terms as product of the GCC and a sum of 10t+15
That's the definition of the "mean" or "average" of that group of terms.
Adding together the terms and dividing them by the number of terms gives the arithmetic mean.
It means all of the terms added together
It means the sum of several monomials.
Factor as : (x+9)(x+10) using the first terms ( x terms) multiply to x2; the last terms multiply to 90; the sum of 9x + 10 x = 19x