Question 8(Multiple Choice Worth 1 points) (07.04 LC)
What are the factors of x2 - 81?
O (X + 9)(x -9)
O (X - 9)(x - 9)
(x + 3)(x - 27)
O Prime

(X + 9)(x -9)

Step-by-step explanation:

Subtraction of perfect squares:

The factors of a subtraction of perfect squares is given by:

What are the factors of x² - 81?

This can be written as:

So

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.