an airplane travels 2976 kilometers against the wind in 4 hours and 3376 kilometers with the wind in the same amount of time. what is the rate of the plane in still air and whats is the rate of the wind

(9x-5) - (x+12) what’s the answer and also explain how to do it i need it for a test tomorrow

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second