Write the first three terms of the sequence defined by the recursive formula below.
ti = 2
tn = 3tr-1 +1, n>1

2^y = ln 5, or   y(ln 2) = ln 5.   solving for y,   y = (ln 5) / (ln 2).   y=5

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the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

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according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

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