Use the alternative formula for the nth partial sum to compute S₁₅ for the sequence.
-18 + (-15.5) + (-13) + (-10.5) + (-8) + . . .

Name: Use the alternative formula for the nth partial sum to compute S 15 for the sequence. -18 + (-15.5) + (-13) + (-10.5) + (-8) + . . .
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Question

Use the alternative formula for the nth partial sum to compute S₁₅ for the sequence. -18 + (-15.5) + (-13) + (-10.5) + (-8) + . . .

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The Answer of Use the alternative formula for the nth partial sum to compute S₁₅ for the sequence. -18 + (-15.5) + (-13) + (-10.5) + (-8) + . . .

Use the Alternative Formula for the Nth Partial Sum to Compute