Afrustum is formed when a plane parallel to a cone’s base cuts off the upper portion as shown.

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315