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Luba_88 [7]
3 years ago
12

Need help please explain w answer if you can.

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0
Start by looking at the components of the line, basically the legs if you were to make it a right triangle.
components = < x1 - x2,  y1 - y2 >
< 10-5 , 12-4 > = < 5 , 8 >
So the line starts at A and goes right 5 then up 8 to point B.

We need a point 3:1 distance which means that if X is our new point, length AX is 3 times length of XB.

3+1 = 4 parts total
Point X will be 3/4 distance

3/4 the components
< 5(3/4) , 8(3/4) > = < 15/4 , 6 >
Add these to point A to go right and up to the new point X.

(5 + 15/4 , 4 + 6) = (35/4 , 10)
35/4 = 8 3/4
so the first one is correct.

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33.33% probability that it takes Isabella more than 11 minutes to wait for the bus

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An uniform probability is a case of probability in which each outcome is equally as likely.

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For this problem, we have that:

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P(X > 11) = 1 - P(X \leq 11) = 1 - \frac{11 - 3}{15 - 3} = 0.3333

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