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Andreas93 [3]
3 years ago
14

What is the surface area

Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0

Answer:

A 1759 sq. units

Step-by-step explanation:

to find the surface area of a closed cylinder the formula is

2πr² + πdh

r = radius = 10

d = diameter = 10 + 10 = 20

2 x 3.14 x 10² + 3.14 x 20 x 18

628.3 + 1130.94 = 1759.24

ans = 1759

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rodikova [14]

Answer:

E(X) = 4*0.2 +3*0.5+ 2*0.2 +1*0.8+ 0*0.02= 2.78

So then the best answer for this case would be:

C. 2.78

Step-by-step explanation:

For this case we have the following probabability distribution function given:

Score         P(X)

A= 4.0       0.2

B= 3.0       0.5

C= 2.0       0.2

D= 1.0        0.08

F= 0.0       0.02

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Total          1.00

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

If we use the definition of expected value given by:

E(X) = \sum_{i=1}^n X_i P(X_I)

And if we replace the values that we have we got:

E(X) = 4*0.2 +3*0.5+ 2*0.2 +1*0.8+ 0*0.02= 2.78

So then the best answer for this case would be:

C. 2.78

3 0
3 years ago
Jenna can swim 150 meters in 3 minutes. If you graph this with minutes on the X-axis and meters on the Y-axis, what will be the
egoroff_w [7]

Answer:  The x-intercept is where a line crosses the x-axis, and the y-intercept is the point ... Thinking about intercepts helps us graph linear equations. ... Looking at the graph, we can find the intercepts. ... We're asked to determine the intercepts of the graph described by the following linear equation: ... Applying intercepts and slope.

Step-by-step explanation:

3 0
2 years ago
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Answer:

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Reason/Explanation

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Hope this helps :P

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3 years ago
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Step-by-step explanation:

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Answer:

A and B and E

Step-by-step explanation:

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5 0
2 years ago
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