Keith and michelle went out to dinner. the total cost of the meal, including the tip, came to $53.70. if the combined tip came out to $9.60, and each friend spent and equal amount , how much did each friend pay not including the tip?

Give me the equations of two lines that have the same slope but are not parallel.

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.

What is the value of the product (3-2i)(3+2i)?