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Tcecarenko [31]
3 years ago
15

A pair of jeans are originally priced at $30.00 jeans go on sale for 20% off, what is

Mathematics
1 answer:
Zigmanuir [339]3 years ago
5 0

Answer:

The answer is 6

Step-by-step explanation:

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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
3 years ago
Gabriel has already 200 pages of his 530-page number reading book. If he reads at an a average rate of 55 pages per hour, how lo
Dafna1 [17]

Answer: 55x +200 = 530           x=6

Step-by-step explanation:

55x +200 = 530

-200                       -200

-------------------------------------------

55x = 330

divide by 55 on both sides

-------------------------------------------------

x=6

5 0
4 years ago
Hi how are you doing today
soldi70 [24.7K]

Answer:

Fine,I guess :)...btw haii

7 0
2 years ago
Read 2 more answers
Helpppppppp pleaseee
In-s [12.5K]

Answer:

Dezias' pensil is 5.11-1.09=4.02 inches long

Paul's pencil is 4.02+2.05=6.07 inches long

Miguel's pencil is 5.11+1.75=6.86 inches long

Combined are 5.11+4.02+6.07+6.86=22.06

The fraction is 22.06/12=1.8383333...

3 0
3 years ago
What is the surface area of this right rectangular prism glass slab with dimensions of 20 inches by 3 inches by 12 inches?
Nata [24]
The answer would be 240 since you are only looking for surface area, which means you wouldn’t include the width
6 0
3 years ago
Read 2 more answers
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