An exclusive class this by boutique triples the price of the items it purchased. what is the boutique markup percentage

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Julian wrote the following numeric pattern on the board3,10,17,24,31,38.what numbers of julian's pattern are compound numbers.

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