A spinner is divided into five equal sections. It’s a game of chance 5 possibilities. What is the probability of $15 occurring?
What is the expected value mean?
What is the standard deviation?

X $1 $2 $5 $10 $15
P(x) .4 .3 .15 .1 ?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?