Find the probability a random voltage is between 124.1 volts and 124.7 volts.
1 answer:
Answer:
C. 0.30
The probability is 0.30
Step-by-step explanation:
The diagram used in solving this question is attached.
From the given graph that is attached: the needed region have
height = 0.5
width = 124.7 - 124.1 = 0.6
The area of the rectangular region is:
Therefore, the probability of a random voltage between 124.1 and 124.7 is 0.3
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Answer:
120
Step-by-step explanation:
Since we're dealing with a problem where the order matters and the first two letters are already chosen we need to subtract the number of letters and the number of available slots per group.
We use the permutation formula to find the answer, but before that let's check values.
n = 8
k = 5
Now since there are two letters already chosen we have to deduct two from both the value of n and k.
n = 6
k = 3
Now we can use the permutation formula:
The 3*2*1 cancels out and leaves us with:
So there are 120 possible ways to arrange eight letters into groups of five where order matters and the first two letters are already chosen.