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Vsevolod [243]
3 years ago
12

A farmer wants to know how many of his cows have no spots. He has 200 cows total. He takes a random sample of 40 cows. Of these,

11 of the cows have no spots. What can the farmer predict about the entire population?
The farmer can predict that 11 cows in the entire population have no spots


The farmer can predict that 55 cows in the entire population have no spots


The farmer can predict that 40 cows in the entire population have no spots


The farmer can predict that all of the cows have no spots
Mathematics
1 answer:
slavikrds [6]3 years ago
4 0

Answer:

The farmer can predict that 55 cows in the entire population have no spots.

Step-by-step explanation:

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So, every interior angle of a regular hexagon measures 120 degrees.

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120 x 6 = 720

So, the answer to your question is that the sum of the interior angles of a hexagon is 720 degrees.

Hope this helps!

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Answer:

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Step-by-step explanation:

2x^2 + 9x =5

we have to move 5 in the other side with a different sign, to get a 2 grade ecuation

2x^2 + 9x -5= 0

now we know

a=2

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we have to find delta

\boxed{\Delta=b^2-4ac} \\\\ \Delta=9^2-4\cdot2\cdot(-5)\\ \Delta=81+40 \\ \Delta=121

and now we have to use the formula to find the root square

\displaystyle \boxed{ X_{1,2}=\frac{-b\pm\sqrt{\Delta} }{2a} }

\displaystyle X_1=\frac{-b-\sqrt{\Delta} }{2a} =\frac{-9-11}{2\cdot2}=\frac{-20}{4}  =-5

\displaystyle X_2=\frac{-b+\sqrt{\Delta} }{2a} =\frac{-9+\sqrt{121} }{2\cdot4} =\frac{-9+11}{4} =\frac{2}{4} =\frac{1}{2}

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Did the assignment :D

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