500+100-100/50 equals what?

i need new friends anyone wanna be friends?

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?