Answer:
mean= sum of all observations /no.of observation
mean=45+80+15+10+94/5
mean=244/5
mean=48.8
this is how the calculator gets 48.8
Answer: 35.3
Explanation: (-3-2-1+0+1+2+....27)/30 = 35.3
Answer:
4
Step-by-step explanation:
Under a counterclockwise rotation about the origin of 90°
a point (x , y ) → (- y, x ), hence
A(2, 1 ) → A'(- 1, 2 )
Answer:
I think answer is B or C or D
Step-by-step explanation:
