Total Surface Area = ? 2 in 5 in 6 in
1 answer:
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Answer:
- Surface area = 104 in.
Step-by-step explanation:
<u>We know that:</u>
- Side lengths of rectangular prism: 2 in, 5 in, and 6 in.
- Surface area = Area of all faces
<u>Solution:</u>
- Surface area = 2(6 x 2) + 2(5 x 2) + 2(6 x 5)
- => Surface area = 2(12) + 2(10) + 2(30)
- => Surface area = 24 + 20 + 60
- => Surface area = 104 in.
Hence, the surface area of the rectangular prism is 104 in.
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Complete question:
A manufacturer has determined that a model of its washing machine has an expected life that is Exponential with a mean of four years to failure and irrelevant board burn-in period. He wants to testthe system and complete data collection. Find the probability that one of these washing machines will have a life that ends: (Note you can find the reliability of the washing machine life)
a) After an initial four years of washing machine service
b) Before four years of washing machine service are completed
c) Not before six years of washing machine service.
Answer:
a) 0.3679
b) 0.6321
c) 0.2231
Step-by-step explanation:
Given:
Mean, u= 4
/\ = 1/u
= 1/4 = 0.25
The cummulative distribution function, will be:
For x≥0,
a) After an intial four years:
P(x>4) = 0.3679
b) Before four years:
P(x<4) = 0.6321
c) Not before 6 years:
P(x>6) = 0.2231