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Home > PC3 > Chapter 12 > Lesson 12.1.1 > Problem 12-10

12-10.

Evaluate each the following sums.

  1. Add the first and last terms.
    Divide by .
    Multiply by the number of terms.

  1. How many terms are there?

  1. Add the first and last terms.
    Divide by .
    Multiply by the number of terms.

  1. How many terms are there? That is, if the sum started with , what would it end with?