Find the probability that a student at greendale middle school takes both art and spanish.

a)3/20
b)2/5
c)7/20
d)1/10

The triangles are similar. what is the value of x? show your work.

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota