Write the decimal equivalent for each rational number. 7/9 9/20 1/18 5/8

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.