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Scorpion4ik [409]
3 years ago
14

If the base of an isosceles trapezoid have lengths of 11 and 26 what is the length of the median

Mathematics
2 answers:
gogolik [260]3 years ago
6 0

Answer:18.5

Step-by-step explanation:

Reptile [31]3 years ago
4 0

Answer:

18.5

Step-by-step explanation:

We have been give that the base of an isosceles trapezoid have lengths of 11 and 26. We are asked to find the length of the median.

We know that the median of an isosceles trapezoid equals half the sum of the base lengths. We can set an equation using our given information as:

\text{Length of median}=\frac{11+26}{2}

\text{Length of median}=\frac{37}{2}

\text{Length of median}=18.5

Therefore, the length of median of our given trapezoid is 18.5.

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Answer:

(a)

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(b)

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(c)

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Step-by-step explanation:

(a)

Your random variable will have two possible values, 30 and 0, one of them with a probability of 0.45 and the other one with a probability of 0.55. Therefore it looks like this.

f(x) = P(X=x) = \begin{Bmatrix} 0.45 \,\,\, \text{for}  \,\,\, x = 10 \\ 0.55 \,\,\, \text{for}  \,\,\, x = -10 \end{matrix}

(b)

The expected value of this PMF would be

E[X] = -10*0.55+10*0.45= -1 therefore on average you will have a dollar less.

(c)

For this one, if you play 20 times and your initial amount is 50$ then you have to compute the following expectation.

E[50+20*X] = 50+20*E[X] = 50-20 = 30

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Step-by-step explanation:

(3x-8)(3x-8)

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