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Mazyrski [523]
4 years ago
14

PLEASE HELP ME And show work

Mathematics
1 answer:
maks197457 [2]4 years ago
4 0
<h2>Greetings!</h2>

Answer:

The snow cone in a cup will hold more.

Step-by-step explanation:

<h3>Traditional snow cone:</h3>

Firstly, to find the area of the cone you need to know the formula:

\frac{1}{3}\pi r^{2} h

So simply plug the values in:

\frac{1}{3}\pi 4^{2} 13

= 217.81 = 218cm³

<h3>Snow cone in a cup:</h3>

To find the area of a cylinder, you need to remember the formula:

The radius is half the diameter so:

Radius = 8 ÷ 2 = 4

\pi r^{2} h

So simply plug these values in:

\pi 4^{2} 5

= 251.33 = 251cm³


So this means that because the snow cone in a cup is 251cm³ whereas the traditional snow cone is only 218cm³, the snow cone in a cup will hold more.


<h2>Hope this helps!</h2>
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By definition of covariance,


\mathrm{Cov}(X,Y)=\mathbb E[(X-\mathbb E[X])(Y-\mathbb E[Y])]


\mathrm{Cov}(X,Y)=\mathbb E[XY-\mathbb E[X]Y-X\mathbb E[Y]+\mathbb E[X]\mathbb E[Y]]=\mathbb E[XY]-\mathbb E[X]\mathbb E[Y]


We have


\mathbb E[(aX-b)(cY-d)]=\mathbb E[acXY-adX-bcY+bd]

=ac\mathbb E[XY]-ad\mathbb E[X]-bc\mathbb E[Y]+bd


\mathbb E[aX-b]=a\mathbb E[X]-b


\mathbb E[cY-d]=c\mathbb E[Y]-d


\mathbb E[aX-b]\mathbb E[cY-d]=ac\mathbb E[X]\mathbb E[Y]-ad\mathbb E[X]-bc\mathbb E[Y]+bd


Putting everything together, we find the covariance reduces to


\mathrm{Cov}(aX-b,cY-d)=ac(\mathbb E[XY]-\mathbb E[X]\mathbb E[Y])=ac\mathrm{Cov}(X,Y)


as desired.

5 0
3 years ago
Which of the following ratios will form a proportion with 2/3. a) 9/12 b) 6/15 c) 12/18 d) 6/8
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What is the equation of the following line written in general form?
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PLEASE SHOW ALL WORK I WILL GIVE BRAINLY THIS IS DUE IN 5 MINS PLEASE HELP ME
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Answer:

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Step-by-step explanation:

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5 0
3 years ago
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