Use the midpoint formula,
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
(4x^4-1)÷x+1
(256x-1)÷x+1
256-1+1
256
The first step shows the problem
The second step powers 4x 4 times
The third step removes x
The 4th step shows the problem after x is removed.
The 5th step is the answer: 256
All that has to be done here is to divide the number of inches by the measurement of a finger. So, divide 25 by 4 1/2 and you get approximately 5.55 fingers. The 5 repeats endlessly so bar notation can be used. If the answer is needed as a fraction, change 4 1/2 to an improper fraction to get 9/2. In this case, you're dividing 25 by 9/2, which is the same thing as multiplying 25 by 2/9, the reciprocal of 9/2. This gives you a total of 50/9 fingers, or 5 5/9 fingers as a mixed fraction.
2179(.4) because you have to divide 1938 by 100 times it by 4 add 1938 then repeat for that answer twice more