What is the sum of 2x2 + 6x + 5 and 3x2 – 2x – 1?

Mathematics

1 answer:

Kipish [7]3 years ago

3 0

5x2 + 4x + 4

Hope this helps!!!!!

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According to a survey, 29% of people carry at least 1 reusable water bottle. If 5 people are selected randomly, what is the prob

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Answer:

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Step-by-step explanation:

We are given the following information:

We treat people carrying at least 1 reusable water bottle as a success.

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Then the number of people follows a binomial distribution, where

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 5

We have to evaluate:

$P(x \geq 2) =1- P(x < 2) \\=1 - \binom{5}{0}(0.29)^0(1-0.29)^5 + \binom{5}{1}(0.29)^1(1-0.29)^4\\=1- 0.1804 - 0.3684\\= 0.4512\\\approc 0.4$

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Help please within the next hour

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To complete the square, you take half of the coefficient of b and square it. It's important to note that the value being added will always be positive.

${ax}^{2} + bx + c$