You split $2000 between two savings accounts. account a pays 2% annual interest and account b pays 5% annual interest. after one year, you have earned a total of $77.50 in interest. how much did you invest in each account?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

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*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.