In a race, Brian Collins has to cross 10 hurdles. The probability that he clears a hurdle is 2/3 Find P(clears exactly 2 hurdles).

Find the lengths of the diagonals of this trapezoid.

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

1. are the triangles similar and if so why? what is the value of x? show your work.