When a rock first formed, it contained 48 milligrams of potassium-40. How much potassium-40 would remain after three half-lives?

Why do interests rates on loans to be lower in a weak economy than in a strong one

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?