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2 years ago

Which expression is equivalent to 9p+9p

Mathematics

1 answer:

mafiozo [28]2 years ago

8 0

Answer:

18p? I don't know what other expressions could be equivalent. I just added 9p to 9p to get my answer.

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The expected value is

$E[X]=\displaystyle\sum_xx\,P(X=x)=\frac1{11}\sum_{x=0}^{10}x=\dfrac{0+1+\cdots+9+10}{11}=\dfrac{55}{11}=\boxed{5}$

The standard deviation is the square root of the variance, which is

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3 years ago

Deena uses 3/8 cup milk and 2/8 cup oil in a recipe. How much liquid does she use in all?

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