Factorise the following expressions by grouping it in pairs (a) 15ab-10b-12a-8 (b) ab+7b+2a+17

Find the area of a parallelogram with base 15 yards and height 21 2/3

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 expression is equivalent to (84+16)