Skylar has sphere-shaped toys for her pool that each have a radius of 2 inches. If the toys fill with water, how many cubic inches of water would it take to fill all 12 toys?

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?

Two numbers have a sum of -19. one number is x. what expression represents the other number?