In a certain chemical, the ratio of zinc to copper is 3 to 13. A jar of the chemical contains 650 grams of copper. How many grams of zinc does it contain?
It contains
grams of zinc.

What is the volume of a rectangular crate that has dimensions 9 inches by 9 inches by 1 feet? 1,458 in.3 121.5 in.3 1,012.5 in.3 36 in.3

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2

Q1 how many whole numbers less than 1000 can be written as a product of 3 consecutive whole numbers? a)10 b)11 c)15 d)21 q2 how many whole numbers between 5000 and 6000 consist of four different digits that decrease from left to right? a)3 b)10 c)69 d)120