Answer:
Ummm -6 and -4
Step-by-step explanation:
Duh
The formula to calculate standard deviation from probability is \sqrt(n*p*(1-p)). n is the sample size, and 200 in this case (number of putts for practice). p is 80% or 0.8, the probability that he can make it. So the standard deviation is \sqrt(200*0.8*(1-0.8)=\sqrt(200*0.8*0.2)=\sqrt(16)=4.
26, 24, 28 could be the answer
Answer:
2 bc cos A
Step-by-step explanation:
Cosine rule
Answer:
X=7
Step-by-step explanation:
X = SQRT(49)
X = 7
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