3 years ago

The table shows the results for spinning the spinner 50 times. What is the relative frequency for the event "spin a 1"?

Mathematics

1 answer:

julsineya [31]3 years ago

3 0

Answer:

Step-by-step explanation:

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aniked [119]

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4 years ago

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Cot^2 135-sin210+5cos^2 225

TiliK225 [7]

$\cot135^o=\cot(90^o+45^o)=-\tg45^o=-1\\\\\sin210^o=\sin(180^o+30^o)=-\sin30^o=-\dfrac{1}{2}\\\\\cos225^o=\cos(180^o+45^o)=-\cos45^o=-\dfrac{\sqrt2}{2}$

$\cot^2135^o-\sin210^o+5\cos^2225^o=(-1)^2-\left(-\dfrac{1}{2}\right)+5\cdot\left(-\dfrac{\sqrt2}{2}\right)^2\\\\=1+\dfrac{1}{2}+5\cdot\dfrac{1}{2}=1\dfrac{1}{2}+2\dfrac{1}{2}=4$

Answer: 4.

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4 years ago

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muminat

I think similarity and congruence and reflection..

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