An inflatable swimming pool held 1,000 gallons of water. It sprang a leak, and 5% of the water leaked out of the pool. How many gallons of water leaked out?

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

What does x represent in the formula for the compound xcl4?