What is the absolute deviation for 15 in the data set?

{20, 20, 30, 15, 40}

a. 5

b. 10

c. 15

d. 25

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Solve x+3y=6 and 4x-6y=6 by elimination . show work !