Answer:
-0.5
Step-by-step explanation:
5+8=13
13/2=6.5
6.5-7=-0.5
Answer: 8
Step-by-step explanation:
Simplify the expression.
Answer:
The reliability of the first system to work is 0.72 whereas the reliability of the second system to work is 0.98.As the reliability of the second system is more than the first one so the second system is more reliable.
Step-by-step explanation:
For first system as given in the attached diagram gives,

As the systems are independent.
The given data indicates that
is given as 0.9
is given as 0.8
Now the probability of the system is given as

So the reliability of the first system to work is 0.72.
For the second system is given as

Where
is the probability where both of the systems does not work. this is calculated as

So now the probability of the second system is given as

So the reliability of the second system to work is 0.98.
As the reliability of the second system is more than the first one so the second system is more reliable.
Answer:
the is k=-0.4
Step-by-step explanation:
sorry if I did it wrong
Answer:
C
Step-by-step explanation:
Scientific notation must be written with a one digit number followed by decimals which eliminates options B and D. Option A is incorrect because this would make the number a decimal. The answer is therefore C by process of elimination!
Hope this is helpful!