Triangle ABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C? A. 9/41 B. 40/9 C. 40
2 answers:
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Answer:
Step-by-step explanation:
we know that
To find out the area of the sidewalk, multiply the length by the width of the sidewalk
The width of the sidewalk is equal to
or
The area is equal to
Answer:
12.1, 12.3,12.4,12.5,12.3,12.1,12.2
And for the standard deviation we can use the following formula:
And after replace we got:
And as we can ee we got a small value for the deviation <1 on this case.
Step-by-step explanation:
For example if we have the following data:
12.1, 12.3,12.4,12.5,12.3,12.1,12.2
We see that the data are similar for all the observations so we would expect a small standard deviation
If we calculate the sample mean we can use the following formula:
And replacing we got:
And for the standard deviation we can use the following formula:
And after replace we got:
And as we can ee we got a small value for the deviation <1 on this case.