What is the value of X? Round to the nearest tenth.

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

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m