Amarket sells 7 oranges for 2.45. how much will 8 oranges cost show your work

Solve the system of equations. y= 2x y= x^2 - 15

Evaluate cos2θ for cosθ = square root of 3/2

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.