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<em>EXPLANATION:</em>
Classification of numbers according to the Venn diagram:
<em>Rational numbers:</em>
These numbers are represented by a fraction a / b, where a and b are integers and also b is different from zero.
<em>Whole numbers</em><em>:</em>
An integer is a natural number that can be positive or negative.
<em>Natural numbers:</em>
Natural numbers are those that start at zero to infinity are clearly positive.
<em>Rational numbers:</em>
When taking the square root of 8, 36 and 4 the result is an exact value that is why they are considered as rational numbers.
<em>Irrational Numbers:</em>
When the root of a number is not exact but is expressed as an infinite decimal as in the case of the square root of 140 which is 11.83215956619; this is an irrational number, also this result cannot be expressed as a fraction.
Answer:
For this case the reliability of the sytem would be given by:
R1= 0.95, R2 =0.95, R3= 0.5, R4 = 0.79 , R5 = 0.6
And replacing we got:
Step-by-step explanation:
We can assume that the system work in series
If we have in general n units the reliability of the system is the probability that unit 1 succeeds and unit 2 succeeds and all of the other units in the system succeed. fror n units must succeed for the system to succeed. The reliability of the system is then given by:
For this case the reliability of the sytem would be given by:
R1= 0.95, R2 =0.95, R3= 0.5, R4 = 0.79 , R5 = 0.6
And replacing we got: