Water fills a spherical tank of diameter 16 meters until the water is 4 meters deep at the lowest point in the tank. What is the diameter of the surface of the water?

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

Which of the following will form the composite function?