Kelly flies a distance of 2,100 miles, the trip takes 4 2/3 hours. What is the airplanes unit rate in mph and at the rate of speed how many miles will the airplane travel in 1 1/2 hours?

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.