Please help. Simplify the expression 3âš27x^6y^4 Show all your work. ​

Given the following statements, which is the best

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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