Which of the following summations from 1 to infinity represents the series -5 + -10 + -15 + -20 + . .? σ-5 σ-5n σ(-5)n

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

The distance around the lake is 2 kilometers. ifelena wants to run 14 kilometers this week, howmany laps must she run around the lake

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