2. solve the system by substitution. (1 point)
2x – y + z = -4
25
|-2x + 3y - 2 = -10
o
0
(-8.7.5)
(-8. -7,5)
(8.-7.5)
(-8.-7.-5)

Two lines that do not intersect are skew. always sometimes or never

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%