What is the height, to the nearest tenth of a foot, of a tree that creates a 40-foot shadow when the sun is at an angle of elevation of 40°?

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

The square root of 9x plus 7 plus the square rot of 2x equall to 7