What is the value of n? 4 x 28 + 6 x 17 - 15 = n

Kevin and randy muise have a jar containing 78 coins, all of which are either quarters or nickels. the total value of the coins in the jar is $13.90. how many of each type of coin do they have?

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

Find the solutions for a triangle with a =16, c =12, and b = 63º