12 + 1 1/3 = ___?

answer is supposed to be a mixed number??

thank you for helping

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable