If you have 16 empty chairs and 2 fifths of the class are absent , how many students are in that class

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Find the missing factor. write your answer inexponential form.9^2=9^4×