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Anna007 [38]
2 years ago
5

Can somebody help me

Mathematics
1 answer:
Sergeeva-Olga [200]2 years ago
6 0

cis(x)=\cos x+i\sin x\\\\cis15^o=\cos15^o+i\sin15^o\\\\\cos15^o=\dfrac{\sqrt6+\sqrt2}{4};\ \sin15^o=\dfrac{\sqrt6-\sqrt2}{4}\\\\\text{therefore}\\\\7cis15^o=7\left(\cos15^o+i\sin15^o\right)=7\cos15^o+7i\sin15^o\\\\=7\left(\dfrac{\sqrt6+\sqrt2}{4}\right)+7\left(\dfrac{\sqrt6-\sqrt2}{4}\right)i

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In Statistics, percentiles are a representation of the relative position of a particular value within a data set. For example, if your exam score is better than k% of the rest of the class. That means your exam score is at the kth percentile.

If your test score is at the 32nd percentile it can be interpreted as follows:

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2 years ago
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kotegsom [21]

Answer:

C

Step-by-step explanation:

You can rearrange the equation to make it: 4y=3x-2

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Rufina [12.5K]

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Step-by-step explanation:

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3 years ago
In a probability experiment, Eric flipped a coin 39 times. The coin landed on heads 26 times. What is the ratio of heads to tail
PilotLPTM [1.2K]

Answer:

26 : 13

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# of tails: 13

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26 : 13

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