Three balls are randomly chosen from an urn containing 3 white, 3 red, and 5 black balls. suppose that we win $1 for each white ball selected, and lose $1 for each red ball selected. if x denotes our total winnings from the experiment, then: a) what values can x take? b) what is the pmf of x? c) show that this is a valid pmf.

i dont know

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.