Ahot air balloon is flying at and altitude of 2101 feet. if the angle of depression from the pilot in the balloon to a house on the ground below is 31°, how far is the house from the pilot?

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.