Events a and b are mutually exclusive. suppose event a occurs with probability .33 and event b occurs with probability .38.
compute the probability that a occurs or b does not occur (or both).
compute the probability that either b occurs without a occurring or a and b both occur.

Abcd is a parallelogram. the diagram is not drawn to scale. if m

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels