Clint earned $1155.00 in interest over 5 years. The account pays 1.25% annually. How much was originally deposited?
1 answer:
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Answer:
The probability that a randomly chosen light bulb will last less than 900 hours is 0.1587.
Step-by-step explanation:
The life span of these light bulbs is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours
Mean =
Standard deviation =
We are supposed to find the probability that a randomly chosen light bulb will last less than 900 hours.i.e. P(x<900)
So,
Z=-1
P(x<900)=P(z<-1)=0.1587
Hence the probability that a randomly chosen light bulb will last less than 900 hours is 0.1587.
Answer: THIRD OPTION.
Step-by-step explanation:
We need to remember that we can create a perfect square trinomial by squaring a binomial:
Then we need need to pick the coefficient of the x term of the given expression, divide it by 2 and square it:
Therefore, the number that should be added to the given expression in order to create a perfect square trinomial is: