In a chemical compound there are three parts zinc for every 16 parts copper by mass. A piece of the compound contains 320 g of copper. Write and solve an equation to determine the amount of zinc in the chemical compound.

Sophia and Tyler are running around a 400-meter track. They start running from the same place, at the same time. Sophia runs at a speed of 5 m/s and Tyler runs at a speed of 4 m/s. How long will it take Sophia to lap Tyler?

Find the slope of the line. (10,6) (4,1.2)

In a frequency chart of data representing a golf game of 18 holes, there are scores of 4 fives, 8 fours, 3 twos, and 3 threes. what score did the golfer average a hole? (rounded to the nearest hundreth?)

What is 1/3 divied by 2 Number line model!

A bicycle lock requires a two-digit code of numbers 1 through 9, and any digit may be used only once. Which expression would determine the probability that both digits are even?

What is the formula for finding the slant height of a pyramid?

Given the function defined below, what is the value of the 4th term? f (1) = - 4 f (n) = - 3f (n-1) + 5 f (4) =

Which two numbers multiply to get 78 but add to get 12

Dan saved 463 over 12 weeks of summer break. he saaved 297 of it during the last 4 weeks. how much did he save during the first 8 weeks

The sum of the first 6 positive even numbers