which equation is correct?
sin hº = y + x
sin h = x+y
tan h = y + x
tan hº = x+y

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?