What is the slope of (2'1) (0,-7)

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

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

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units