The best example of a plane would be A) the surface of a flat table. A plane could also be represented by anything that is flat in nature.
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Answer:
The variance is 
Step-by-step explanation:
From the question we are told that
The sample size is n = 21
The sum of squares is 
Generally the variance is mathematically represented as

substituting values


Answer:
The answer should be D. It is -2 on the inside because it is backwards of what you may think and because it is inside the square root. The -3 represents a down shift of 3
Answer:
4/8, 6/12, 7/14,etc.
Step-by-step explanation:
Multiply 2/4 by any number(like 4) and you can find a equal ratio
Answer:
The answer is 21
Step-by-step explanation:
All you have to do is 9+12
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