It takes a student 11 seconds to scan their hand at lunch. During one 30 min lunch period, approximately how many students can b
1 answer:
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Answer: The correct choice is letter C.
Step-by-step explanation:
Cosine = adjacent/hypotenuse
In this triangle, you are looking for angle degree of cos X.
When finding an angle degree, you must use the inverse of whatever trig ratio you are using. In this case, you would use .
The adjacent side from x is 12 and the hypotenuse is 15.
So you form your trig ratio which is your answer.
= 0.80
Answer:
The correct statements are: B and D.
Step-by-step explanation:
Standard deviation is one of the measure of dispersion or spread of a dataset from the average value of the dataset. The standard deviation measures the variability of the distribution of values.
The higher the spread or variability in the data set, the greater is the standard deviation value and thus greater will be the magnitude of the deviance of the value from their average.
Then the standard deviation (S.D.) is given by,
The correct statements are:
B. It is a measure of variability.
D. It is calculated using the mean.