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solong [7]
3 years ago
5

A coin has heads on one side and tails on the other. The coin is tossed 12 times and lands

Mathematics
1 answer:
Fynjy0 [20]3 years ago
3 0

Answer:

D, the observed frequency of landing heads up gets closer to the expected frequency based on the probability of the coin landing heads up.

Step-by-step explanation:

As of now, the observed frequency states that the coin will land on heads 4/12 times. The expected frequency states that the coin will land on heads 50% of the time, or 6/12 times. As the number of trials increases, the observed frequency will get closer to the expected frequency.

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6 0
3 years ago
What is the area of a circle whose equation is (x-3)² + (y + 1) ² =81?
kupik [55]
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Where (x_{1}, y_{1}) is the centre of the circle. In this case, we don't need to know the centre. Just the radius. 

Let us start by converting the equation into standard for, which I typed above. Divide both sides by 81. 

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You can convert that into a decimal if you wish. 

Hope this helped!

~Cam943, Moderator
4 0
4 years ago
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