Can you solve this > : d

question 1:

if a = -3n + 2, and b = 5n - 7, what is the value of a + b, in simplest form?

2n + 9

-8n - 5

-3n

2n - 5

question: 2

if a = -3n + 2 and b = 5n - 7, what is the value of a - b, in simplest form?

question: 3

express the sum of the angles of this triangle in two different ways.

Step-by-step explanation:

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.