In a certain chemical, the ratio of zinc to copper is 3 to 13. A jar of the chemical contains 585 grams of copper. How many grams of zinc does it contain?

Which expression is equivalent to sq-80

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

Which of the following is the true for f(x) = 5cos