In a certain chemical, the ratio of zinc to copper is 4 to 11. A jar of the chemical contains copper. How many grams of zinc does it contain?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9