Ben takes a 45 minute online test. After answering 10 questions, the timer indicates that one fifth of the total time has elapsed. How long did it take Ben to answer those 10 questions?

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

An octagonal prism has jow many lateral faces?

Which polygon is she in the process of constructing ?