If x1=3, x2=12, and x3=30, then what is σxi?

The value of ΣXi will be:

We know that the summation sign represents the sum of two or more quantities.

Here we are asked to find ΣXi , this means that we have to sum up the given variable

We are given:

Hence,

i.e.

                 Hence, the answer is: 45

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.