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laiz [17]
3 years ago
6

An airline’s weekly flight data showed a 98% probability of being on time. If this airline has 15,000 flights in a year, how man

y flights would you predict to arrive on time? Explain whether you can use the data to predict whether a specific flight with this airline will be on time.
first answer gets some points
Mathematics
1 answer:
alexandr1967 [171]3 years ago
6 0
If there are 15,000 flights, and there is 98% chance of being on time, then 14,700 of the flights will be on time. However, you can't use the data to tell whether a specific flight will be on time, as in the end, a probability is just a probability and not a guarantee. This means if the first 300 flights of an airline is late, that doesn't mean that there is a 100% chance of the rest of the flights being on time, but there is likely just going to be a higher chance of an ontime flight.
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In a naval engagement, one-third of the fleet was captured, one-sixth was sunk, and two ships were destroyed by fire. One-sevent
Otrada [13]

Answer:

60 ships.

Step-by-step explanation:

Let the total number of ships in the naval fleet be represented by x

One-third of the fleet was captured = 1/3x

One-sixth was sunk = 1/6x

Two ships were destroyed by fire = 2

Let surviving ships be represented by y

One-seventh of the surviving ships were lost in a storm after the battle = 1/7y

Finally, the twenty-four remaining ships sailed home

The 24 remaining ships that sailed home =

y - 1/7y = 6/7y of the surviving fleet sailed home.

Hence

24 = 6/7y

24 = 6y/7

24 × 7/ 6

y = 168/6

y = 28

Therefore, total number of ships that survived is 28.

Surviving ships lost in the storm = 1/7y = 1/7 × 28 = 4

Total number of ships in the fleet(x) =

x = 1/3x + 1/6x + 2 + 28

Collect like terms

x - (1/3x + 1/6x) = 30

x - (1/2x) = 30

1/2x = 30

x = 30 ÷ 1/2

x = 30 × 2

x = 60

Therefore, ships that were in the fleet before the engagement were 60 ships.

3 0
2 years ago
What is the volume of a sphere that has a diameter of 12
posledela

Answer:

V≈904.78

Step-by-step explanation:

3 0
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What is the length of BC⎯⎯⎯⎯⎯ ?<br><br><br> Enter your answer in the box.
Rudiy27

Answer:

  \overline{\text{BC}}=\boxed{22}

Step-by-step explanation:

The angle marks mean those angles have the same measure. That means the sides opposite them have the same measure, so ...

  2x -24 = x -2

  x = 22 . . . . . . . . . add 24-x

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8 0
2 years ago
Can someone help me solve for X :( I’m stressing out please HELP !
Leni [432]

Answer:

7

Step-by-step explanation:

28 ÷ 16 = 1.75

1.75 × 4 = 7

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3 years ago
The time to complete a standardized exam in the BYU-Idaho Testing Center is approximately normal with a mean of 70 minutes and a
leva [86]

Answer:

Step-by-step explanation:

Given that X the time to complete a standardized exam  in the BYU-Idaho Testing Center is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.

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