Ethan created three triangles: triangle x, triangle y, and triangle z. if mc003-1.jpg and mc003-2.jpg, which must also be true? the triangles are equilateral. the triangles are right triangles. triangles x and z are congruent. triangles x, y, and z share one or more vertices.

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

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.

Write as a product: ac^2–ad+c^3–cd–bc^2+bd