Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
Applying the law of cosines

substitute the given values


Answer:
1 4/5
Step-by-step explanation:
6 - 4 1/5 = x
6/1 - 21/5 = x
6/1 x 5/5 = 30/5
30/5 - 21/5 = 9/5
9/5 = 1 4/5
Answer:
I think the answer is C ,The sample proportion is the fraction of samples which were successes, so. (1) For large , has an approximately normal distribution.
Step-by-step explanation:
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