Using triangle BCD find the distance between Rex and a dolphin in between Rex and Paulo assume the distance between Palladia dolphin is exactly 100 feet. Pls need help

What is the length of bc ? enter your answer in the box. bc =

At which value in the domain does f(x) =0?

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.