A community pool that is shaped like a regular pentagon needs a new cover for the winter months. The radius of the pool is 20 ft
. The pool is 24 ft on each side.
To the nearest square foot, the area of the pool that needs to be covered
is ____ft Sq ?
To the nearest square foot, the area of the pool that needs to be covered
is ____ft Sq ?
1 answer:
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Answer:
a) X ~
b) μ = 100/3
c)
d) A battery is expected to last 100/3 months (33 months and 10 days approximately).
e) For seven batteries, i would expect them to last 700/3 months (approximately 19 years, 5 months and 10 days).
Step-by-step explanation:
a) The life of a battery is usually modeled with an exponential distribution X ~
b) The mean of X is μ = 1/0.03 = 100/3
c) The standard deviation is
d) The expected value of the bateery life is equal to its mean, hence it is 100/3 months.
e) The expected value of 7 (independent) batteries is the sum of the expected values of each one, hence it is 7*100/3 = 700/3 months.
Answer:
Option B
Step-by-step explanation:
Given the following question:
In order to find the answer, we simply apply the exponent rule and add the exponents.
The answer is option B or "5^6."
Hope this helps.