Write a quadratic function f whose zeros are -3 and -4

In the surface area formula for cylinders which expressionrepresents the lateral area

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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.