Two times antonio's age plus three times sarah's age equls34. sarah's age is also five times antonio's age. how old is sarah ?

Which math sentence can be used to determine if the triangle is a right triangle?

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.

Can someone me out here number 4 plz