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dalvyx [7]
3 years ago
10

The lifetime probability of backache is 1/10. The lifetime probability of Parkinson's is 1/12. One not related to the other. Wha

t is the lifetime probability of developing both backache and parkinsonism?
Mathematics
1 answer:
GalinKa [24]3 years ago
8 0

1/10 x 1/12 = 1/120 your final answer is this!

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Answer:

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Step-by-step explanation:

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<u>Using Pythagoras</u>

x^{2} + (x+5)^{2} = (x+8)^{2}\\x^{2} + x^{2} + 10x +25 = x^{2} + 16x + 64\\x^{2} + x^{2} - x^{2} + 10x - 16x + 25 - 64 = 0\\x^{2} - 6x -39 = 0

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x = 3 + 4\sqrt{3} = 9.928(4s.f.)

             OR

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∴ x = 3 + 4\sqrt{3}

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Assuming that each friend gets a serving size, we can simply divide the total number of soda, 40, by the serving size, 8, to get 5.

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2 years ago
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