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Ivan
3 years ago
12

Num.4 (Please help me out)

Mathematics
2 answers:
kondaur [170]3 years ago
7 0

Answer:

D) QY

Step-by-step explanation:

Alex777 [14]3 years ago
5 0

D- QY is the correct answer

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For safety reasons, 4 different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills
Evgen [1.6K]

Answer:

<em>99.93%</em>

Step-by-step explanation:

<u>Probability of Independent Events</u>

Given the probability of success of each detector is 0.84 independently of the others, their combined success/failure probability can be computed with the product rule.

We can calculate the required probability by using the binomial distribution, but it's easier to calculate the probability of the negated event an subtract from 1.

We want to know the probability that a least one of the 4 systems detects the occurrence of theft. That probability is the sum of the probabilities that one of them, two of them, three of them or all of them succeed. The negated event is that NONE of them actually detects the theft. Being p the individual probability of success, p=0.84. Being q the probability of failure, q=0.16.

The probability that none of the systems detect the theft is

P(0)=q^4=0.16^4=0.00065536

Thus, the probability that at least one of the systems detect the theft is

P(x\geq1)=1-P(0)=1-0.00065536=0.9993

That means a 99.93%

3 0
2 years ago
Describe fully the single transformation that maps triangle A onto triangle B
Tomtit [17]

Answer:

reflection

Step-by-step explanation:

its a reflection across the y axis

5 0
3 years ago
What are the intercepts of the equation 18x-9y+3z=18
IceJOKER [234]
The answer is:  [D]:  " <span>(1, 0, 0), (0, –2, 0), (0, 0, 6) " .
______________________________________________________</span>
6 0
3 years ago
Read 2 more answers
Shane buys fishing line in rolls of 700 yards of line per roll. How many feet of fishing line are in one roll?
Vesna [10]
The answer is 2,100. since there are 3 feet in 1 yard, you would multiple 700 by 3.
3 0
3 years ago
A football field is 53 1/3 yards wide how many feet wide is a football field
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Just look up 53 1/3 yards in feet. This would mean that the football field is 160 feet.
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3 years ago
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