In a certain chemical, the ratio of zinc to copper is 4 to 15. A jar of the chemical contains 600 grams of copper. How many grams of zinc doe sit contain?

True or false? a triangle can be circumscribed about a given circle

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

For the equations below which statement is true ?