90,000,000 is the answer
Step-by-step explanation:
A tangent is always perpendicular to the radius at the point of tangency.
A right angle.
Answer: The variance of their weights = 9,752,155,009 kg.
Step-by-step explanation:
- The variance is the square of the standard deviation . it measures the spread between data values in a data set.
So if standard deviation of 10 subjects = 98753 kg
Then, variance = 
Hence, the variance of their weights = 9,752,155,009 kg.
Answer:
-2
Step-by-step explanation: