Help! answer choices a)-16/3 b)-2 c)2 d)16/3
1 answer:
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Answer:
B) sin Ф
Step-by-step explanation:
Use the pythagorean identity for cos and tan
tan = Multiply both sides by cos
sin Ф = sin Ф
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Answer:
0.1151
Step-by-step explanation:
Given that a laptop company claims up to 10.1 hours of wireless web usage for its newest laptop battery life. However, reviews on this laptop shows many complaints about low battery life. A survey on battery life reported by customers shows that it follows a normal distribution with mean 9.5 hours and standard deviation 30 minutes.
If X is the battery life then X is N(9.5, 0.5)
(we convert into one unit for calculations purpose here hours)
a) the probability that the battery life is at least 10.1 hours
=
we get the probability that the battery life is at least 10.1 hours is 0.1151