Maria walked 3 km west and 4 km south . calculate how far she is from her starting point.

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

Need on this geometry question. explain how you did it.

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?