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Komok [63]
3 years ago
11

The probability of a train arriving on time and leaving on time is 0.8. The probability of the same train arriving on time is 0.

84. The probability of this train leaving on time is 0.86. Given the train arrived on time, what is the probability it will leave on time?
Mathematics
2 answers:
lys-0071 [83]3 years ago
8 0
To help you with this topic, I would suggest you revise probability trees.

P(train arriving) = 0.8
P(train arriving on time) = 0.84
P(train arriving late) = 0.86

0.8 x 0.86 = 0.688

Answer: 0.688

Hope it helped :)
Aleksandr [31]3 years ago
6 0
No answer is possible, because the given information is inconsistent.

If the arrival probability is 0.84 and the departure probability is 0.86,
then the probability of the same train arriving AND leaving on time
is

         (0.84) * (0.86)  =  0.7224       
 
                             NOT  0.8 , like the first sentence says.
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24 (or 8%) times 11.5 = 276

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3 years ago
PLS Help Asap! i will award brainliest On her way to her grandmother's house, Jackie traveled three times as many miles by train
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Answer:

24 miles.

Step-by-step explanation:

Jackie traveled four times as many miles by bus as by foot. This means that the number of miles travelled by bus is 4 units, and the number of miles travelled by foot is 1 unit.

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3 years ago
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Answer:

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If we count the number of days from today and Lexi takes 10 mg of the same medicine four days later then the amount of medicine left on her body after t days will be L = 10(\frac{1}{2} )^{t-4}. (Answer)

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3 years ago
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3 years ago
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In need of help plz <br> Find the ∠VXW and ∠XVW
My name is Ann [436]

Answer:

∠VXW = 57°

∠XVW = 56°

Step-by-step explanation:

Firstly, we need to remember the sum of a triangle's angle ALWAYS equals 180°.

Next, we see that two angles of △XYZ are given to us; 58° and 65°. Adding these two numbers would give us 123°. Now we need to subtract 123 from 180  to find the ∠YXZ; 180° - 123° = 57°.

Once we have this number, we need to remember a straight line also measures 180°. Line YW is important to find our answer, but first we need to find the answer to ∠WXZ. Since ∠YXZ and ∠WXZ come together and create the line YW, we can easily find the answer to ∠WXZ by subtracting ∠YXZ with 180; 180° - 57° = 123°

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Since a triangle's angles always equal to 180° and we have the answer to two angles in △XVW, all we need to do is add then subtract;

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