Two airplanes left the same airport traveling in opposite directions. if one airplane averages 400 miles per hour and the other airplane averages 250 miles per hour, in how many hours will the distance between the two planes be 1625 miles?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?