Choose the value for x that makes the proportion true. 1 ft / 16in. = xft/64in.

A. 3
B. 4
C. 5
D. 6

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36