The positvie value that makes x squared = 4 over 49

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

What multiplys to be 1 but adds up to be 4