Answer:
it either c or a
Step-by-step explanation:
i know it not a negative number
A) Add the distances together and divide by the number of attempts:
50.7 + 49.4 + 52.3 + 48.9 + 51.6 = 252.9
252.9 / 5 = 50.58
The average was 50.58 m.
B) Add 52.5 to the total above and divide by 6:
252.9 + 52.5 = 305.4
305.4 / 6 = 50.9 m.
Now subtract the average from above:
50.9 - 50.58 = 0.32 difference.
This method is called cluster sampling. I hope it will work.
Answer:
X= 2
Step-by-step explanation see X/6 =4/12 all you have to do is multiply the 6 x 2 is 12 and 2x2 is 4 so it would match with the equation
I guess you're supposed to write the expression on the right in terms of 
.
18. Notice that 
, so
20. Notice that 
, so
