There are 83 apples. each bag can hold 4 apples. how many full bags are there? how many are left over?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.