Answer:
2
Step-by-step explanation:
95% of all data lies within 2 standard deviations of the mean.
Answer:
solution is the third one
3+5ac=Q subtract 3 from both sides
5ac=Q-3 divide both sides by 5c
a=(Q-3)/(5c)
A counterclockwise rotation of 180 degrees
Answer:
x=70
Step-by-step explanation:
angle FED and GEC are vertical angles so they both equal 50
angle DEB and CEA are also vertical angles so they both equal 20
50+20=70