Solve by subtraction
y=6x+23
y=3x+11

15 points please show work

Find the total area for the regular pyramid ( follow the answer set up in the picture)

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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.