Solve the proportion x/21 = 1/3

Simplify 4 square root of 2 end root plus 7 square root of 2 end root minus 3 square root of 2 . (1 point) 2 square root of 8 8 square root of 2 8 square root of 6 6 square root of 8

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a