Solve each system by elimination. 1) -10x + 8y = 10 2x + 2y = -20 2) 8x - 6y = -12 -3x + 12y = -15 3) 5x + 4y = -25 2x + 3y = -3

What is the perimeter of square abcd? units units 28 units 37 units

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees

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.