X+y=80
5x+8y=535

what is x and what is y

What could explain what happened when the time was equal to 120 minutes

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.

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles