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Eddi Din [679]
2 years ago
6

Teresa counted the number of tomatoes in 9 baskets at a vegetable stand. The list shows the data. 11, 12, 8, 12, 8, 8, 11, 11, 9

. What is the difference between the mean and the median of the data?
Mathematics
1 answer:
barxatty [35]2 years ago
4 0
Mean is 4
Median is 11
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Find the polynomial of lowest degree with only real coefficients and having the given zeros. -7i and square root of 2
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Answer:

x³ - (√2)x² + 49x - 49√2

Step-by-step explanation:

If one root is -7i, another root must be 7i.  You can't just have one root with i.  The other roos is √2, so there are 3 roots.  

x = -7i       is one root,

   (x + 7i) = 0    is the factor

x = 7i       is one root

  (x - 7i) = 0     is the factor

x = √2      is one root

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So the factors are...

(x + 7i)(x - 7i)(x - √2) = 0

Multiply these out to find the polynomial...

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Now foil this out...

 x²(x) - x²(-√2) + 49(x) + 49(-√2) = 0

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