Two line segments are parallel, and each is 8 centimeters long. How many rectangles can be constructed using this information? A. 0 B. 1 C. 2 D. 4 E. infinitely many

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

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.

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240