For
y=ax²+bx+c
the x value of the axis of symmetry is -b/(2a)
so test them
A., -b/(2a)=-(-8)/(2*-2)=8/-4=-2, yep
B. -b/(2a)=-2/(2*1/2)=-2/1=-2, yep
C. -b/(2a)=-(-16)/(2*4)=16/8=2, nope, need -2
D. -b/(2a)=-12/(2*3)=-12/6=-2, yep
answer is C
Answer:
I think B
Step-by-step explanation:
because their age group is 20-25 more of a constant age group
compared to 20-30
Answer:6 9/10
Step-by-step explanation:
Answer:
to know the average of the data set
Step-by-step explantion:
i dont know :)
