with its radar, an aircraft spots another aircraft 8000 feet away at a 12 degree angle of depression. What is the horizontal distance between the two aircrafts? Round your answer to the nearest tenth.

Simplify the expression 10/11(22z) + (a+5) -1

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.