George and his friends have planned a potluck for the weekend. george has informed his friends that each of them should bring any one of four types of food items: a pie, sandwiches, a salad, or a dessert. george wants to find the probability that lydia and bert will bring a pie for the potluck. george designs a simulation where he tosses a fair coin four times. if the coin lands on tails at least once, lydia and bert will bring a pie for the potluck. george repeats this for 80 trials. what revision should george make to his simulation?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.