You roll a die, winning nothing if the number of spots is odd, $2 for a 2 or a 4, and $26 for a 6. a) find the expected value and standard deviation of your prospective winnings. b) you play four times. find the mean and standard deviation of your total winnings. c) you play 60 times. what is the probability that you win at least $400?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14