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in the figure below, o is the centre of a circle where angle ocd is an equilateral triangle. angle oab=20* and angle aod=127*. find angle boc.

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?