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andreev551 [17]
2 years ago
14

HELP PLEASE I'M WRITING A TEST!!! x+3/4 = x+5/6

Mathematics
1 answer:
Keith_Richards [23]2 years ago
5 0

Answer:

no solution

Step-by-step explanation:

if u plug a random number like 1 for example 1+3/4=1 3/4 and 1+5/6=1 5/6

1 3/4 =1 5/6-this is NOT equal

so no solution

hopefully that helps! please let me know if i did anything wrong thanks!

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(3 marks) A certain type of storage battery lasts, on average, 3.0 years with a standard deviation of 0.5 year. The battery live
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Answer:

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Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

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A certain type of storage battery lasts, on average, 3.0 years with a standard deviation of 0.5 year

This means that \mu = 3, \sigma = 0.5

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Z = \frac{X - \mu}{\sigma}

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0.8041 = 80.41% probability that a given battery will last between 2.3 and 3.6 years

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