The value of x is, -3.
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Answer:
-3
Step-by-step explanation:
Edu 2020
Answer:
13
Step-by-step explanation:
(3 - 2i)(3 + 2i)
FOIL
first 3*3 = 9
outer 3*2i = 6i
inner -2i*3 = -6i
last -2i * 2i = -4i^2 = -4(-1) =4
Add together
9+6i-6i+4 = 13
Greens 5% 55% 60% .
Parsons 10% 5% 15% .
Ratten 6% 19% 25% .
If a camera lens is randomly selected from the general population of all lenses, what is the probability that it was NOT made by the Ratten Company, given that it is defective?
0.22
0.36
0.49
The probability is:
0.71
Let A denote the event it is defective
and B denote the event that it is not made by Ratten company.
Lens Defective Not Defective Total .
Greens 5% 55% 60% .
Parsons 10% 5% 15% .
Ratten 6% 19% 25% .
Total 21% 79% 100%
P(A)=0.21
( Since 21/100=0.21 )
P(A∩B)= 15%
( Since, 5%+10%=15%
and 15%/100%=0.15)
Hence, we are asked to find P(B|A)
We know that:
The answer is:
0.71