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Anni [7]
3 years ago
13

What is the probability of spinning once & having it land in either 2 or 8

Mathematics
1 answer:
Montano1993 [528]3 years ago
3 0
It would depend on how many spaces there are on the spinner. If it was a total of 10 spaces then the probability of spinning on a 2 or 8 would be 2/10. Or if your looking percentage wise then 20%
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ANSWER

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EXPLANATION

The given quadratic equation is

0 = 2 {x}^{2}  + 3x - 8

This is the same as,

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Comparing to

a {x}^{2}  + bx  + c = 0

We have

a=2, b=3,c=-8

Using the quadratic formula, the solution is given by:

x =  \frac{ - b \pm \:  \sqrt{ {b}^{2}  - 4ac} }{2a}

We substitute the values to get,

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x =  \frac{ - 3\pm \:  \sqrt{ 73} }{4}

The positive root is

x =  \frac{ - 3 + \:  \sqrt{ 73} }{4} = 1.39

to the nearest hundredth.

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3 years ago
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