CPM Homework Help : A2C Problem 13-11

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Home > A2C > Chapter Ch13 > Lesson 13.1.1 > Problem 13-11

13-11.

Find the sum of the integers $-10 + -9 + -8 + ...+ 40$ .

Hint:

Remember the summation formula:

$S=\frac{n(t(1)+t(n))}{2}$

Answer:

$765$

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