The half-life of a radioactive kind of protactinium is 1 minute. If you start with 992 grams of it, how much will be left after 4 minutes?

The quadratic function h(t) = -16.1t^2 + 150 models a balls height, in feet, over time, in seconds, after its dropped from a 15 story building. from what height in feet was the ball dropped?

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Adriveway is 40 yards long about how many meters long is it