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?

Find the values of y: 3y^3(y^2+ 2/3y)=0

The square root of 9x plus 7 plus the square rot of 2x equall to 7

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.