Hello,
y=k/x
if x=6 then y=42==>42=k/6==>k=252
if x=9 then y=252/9=28
Answer:
D
Step-by-step explanation:
Answer:
A=a2
Step-by-step explanation:
Answer:
B. Yes, because 14.18/11.71 < 2.
Step-by-step explanation:
When the ratio of the largest sample standard deviation to the smallest sample standard deviation is less than 2, the condition is said to be met.
Answer:
The first differences are 5, 9, 13, 17, and so the second differences are all 4.
Halving 4 gives 2, so the first term of the sequence is 2n^2.
Subtracting 2n^2 from the sequences gives 1,0,-1-2,-3 which has the nth term -n+2.
Therefore, the formula for this sequence is 2n^2 -n +2.
