Hello this is mathematics and giving 10 points for the person that can solve it

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.