If a semi circle is rotate around the Y axis ocean blue at three dimensional polyhedral would be formed?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

What is negative 3/9 times negative 2/8 ?