Telemarketers have only a 19% chance of making a sale for every call they make. What is the probability that on a random day it takes 4 calls before they get their first sale?

15 point ! ~ see if you know the answer to both you!

Me with this one question, and i'll upvote the brainliest answer

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .