Answer: 0
Step-by-step explanation: -6.80 + 6.80
Negative numbers act as subtracting
Without the actually predicted values in comparison to the real values it is only possible to give a very likely answer based on their scale:
a) is 25 million off, which sounds bad but when compared to a few billion in population it's not even 1%
b)3 billion is more than half the world population as error: very unlikely
c)154 billion, unlikely that a prediction is off by a factor of ~30
d)same as c
so a) is most likely the solution, but in theory the predictions could be arbitrarily bad (things like negative population, or extreme growths)
See, pls, one way of decision (attachment).
Answer:
Variance of the given data = 31.143
Explanation:
Variance, 
, where n is the number of observations, μ is the mean and 
is the observations made.
Number of observations, n = 7
Mean, μ = 
So variance of the given data = 31.143
The answer would be the first one, (Angle QPT is equal to 1/2 (QT -QS). You would just need to use and input in the formula that finds angle measurements based on far and near arcs.
