3 years ago

The sum of (2a + ab + 2b) + (4a2 - 3ab + 9)

Mathematics

1 answer:

Sati [7]3 years ago

4 0

You can only add/subtract like terms so:

2a+ab+2b+4a^2-3ab+9

2a-2ab+2b+4a^2+9 (the only like terms were ab and -3ab)

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If y has moment-generating function m(t) = e 6(e t −1) , what is p(|y − µ| ≤ 2σ)?

Lostsunrise [7]

Since $\mathrm M_Y(t)=e^{6(e^t-1}$ , we know that $Y$ follows a Poisson distribution with parameter $\lambda=6$ .

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So,

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2 years ago

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kompoz [17]

Answer:

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Step-by-step explanation:

y = x-2

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2 years ago

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There were 25 adults and 15 children at a restaurant. what percent of the people were children?

Arada [10]

Answer:

37.5 percent

Step-by-step explanation:

Well, there are 25+15=40 total people. Since there are 15 children, the percent is 15/40, which is equal to .375

Because percent is by hundredths, multiply by 100 by moving the decimal to the right twice, and you have a percentage of 37.5.

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2 years ago