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MrRa [10]
4 years ago
11

What is the surface area of the rectangular prism? Please show how you got it !!

Mathematics
1 answer:
nirvana33 [79]4 years ago
3 0

Answer:

4268 square centimeters

Step-by-step explanation:

The formula for the surface area of right rectangular prisms is 2((width*lenght)(height*length)(height*width)).

The length of this triangle is 44 cm, the height is 30 cm, and the width is 11.

2((11*44)(30*44)(30*11))=4268 square centimeters

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Answer:

1) \frac{2}{5}

2) 49.225

3) \frac{7}{2}

Step-by-step explanation:

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So in our problem the values x will be: 1/1, 1/2, 1/3, 1/4, 1/5 and 1/6 and the probavility for all values is 1/6 so the expected values will be:E(x)=(\frac{1}{1} *\frac{1}{6}) +(\frac{1}{2} *\frac{1}{6}) +(\frac{1}{3} *\frac{1}{6})+(\frac{1}{4} *\frac{1}{6})+(\frac{1}{5} *\frac{1}{6})+(\frac{1}{6} *\frac{1}{6})

E(x)=0.167+0.083+0.056+0.042+0.033+0.028=0.409\approx \frac{2}{5}

2) To find the variance of the expected values we can use the equation:

Var(x)=\frac{\sum_{i=1}^{n}(x_{i}-\overline{x})^{2} }{n}

So for our problem will be:

Var(x)=\frac{(3-10.5)^2+(4-10.5)^2+(17-10.5)^2+(18-10.5)^2}{4}

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E(x)=0.17+0.33+0.5+0.67+0.83+1=3.5\approx \frac{7}{2}

7 0
3 years ago
Write an equivalent ratio for 3/30
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Answer:

One example of an equivalent ratio to 3/30 is 1:10.

6 0
4 years ago
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