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True [87]
2 years ago
14

What is the surface area of this figure?

Mathematics
1 answer:
Ugo [173]2 years ago
4 0

Answer:

option c is the correct answer

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17 students on math team want to raise $483.62 to buy books. They already have raised $218.25.If each student raised the same am
Harlamova29_29 [7]
That answer you are looking for would be $15.61
i hope this helped you with the answer!

7 0
3 years ago
A box contains 5 red and 5 blue marbles. Two marbles are withdrawn randomly. If they are the same color, then you win $1.10; if
topjm [15]

Answer:

a) The expected value is \frac{-1}{15}

b) The variance is  \frac{49}{45}

Step-by-step explanation:

We can assume that both marbles are withdrawn at the same time. We will define the probability as follows

#events of interest/total number of events.

We have 10 marbles in total. The number of different ways in which we can withdrawn 2 marbles out of 10 is \binom{10}{2}.

Consider the case in which we choose two of the same color. That is, out of 5, we pick 2. The different ways of choosing 2 out of 5 is \binom{5}{2}. Since we have 2 colors, we can either choose 2 of them blue or 2 of the red, so the total number of ways of choosing is just the double.

Consider the case in which we choose one of each color. Then, out of 5 we pick 1. So, the total number of ways in which we pick 1 of each color is \binom{5}{1}\cdot \binom{5}{1}. So, we define the following probabilities.

Probability of winning: \frac{2\binom{5}{2}}{\binom{10}{2}}= \frac{4}{9}

Probability of losing \frac{(\binom{5}{1})^2}{\binom{10}{2}}\frac{5}{9}

Let X be the expected value of the amount you can win. Then,

E(X) = 1.10*probability of winning - 1 probability of losing =1.10\cdot  \frac{4}{9}-\frac{5}{9}=\frac{-1}{15}

Consider the expected value of the square of the amount you can win, Then

E(X^2) = (1.10^2)*probability of winning + probability of losing =1.10^2\cdot  \frac{4}{9}+\frac{5}{9}=\frac{82}{75}

We will use the following formula

Var(X) = E(X^2)-E(X)^2

Thus

Var(X) = \frac{82}{75}-(\frac{-1}{15})^2 = \frac{49}{45}

7 0
3 years ago
a chicken can run at a top speed of 9 miles per hour find the top speed of a chicken in miles per minute round to the nearest te
eduard

so if you do 9 divided by 60 and it will give you 0.15 and that is your answer

5 0
3 years ago
Read 2 more answers
Help me with this question
finlep [7]

Answer:

I THINK C

Step-by-step explanation:

I THINK.

4 0
3 years ago
Read 2 more answers
Perry traveled at an average speed of 55 miles per hour
padilas [110]

Answer:

Piper traveled 115 miles for 6 hours.

Step-by-step explanation:

We just add the amount of distance that Piper traveled together, so "55+60 = 115 miles" and then we add the amount of time it took to travel that distance. So "3.5 + 2.5 = 6 hours".

6 0
2 years ago
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