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2 years ago

The sum of three consecutive integers is -369

Mathematics

2 answers:

dezoksy [38]2 years ago

3 0

Let the middle number be x.

Then the other numbers are x - 1 and x + 1.

x - 1 + x + x + 1 = -369

3x = -369

x = -123

x - 1 = -124

x + 1 = -122

Answer: The numbers are -124, -123, -122

Serga [27]2 years ago

3 0

17 is the answer

divide the sum of the three consecutive odd integers by 3: 51 / 3 = 17

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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Gennadij [26K]

Answer:

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Step-by-step explanation:

we know that

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Consider a disease whose presence can be identified by carrying out a blood test. Let p denote the probability that a randomly s

kifflom [539]

Answer:

The expected number of tests, E(X) = 6.00

Step-by-step explanation:

Let us denote the number of tests required by X.

In the case of 5 individuals, the possible value of x are 1, if no one has the disease, and 6, if at least one person has the disease.

To find the probability that no one has the disease, we will consider the fact that the selection is independent. Thus, only one test is necessary.

Case 1: P(X=1) = [P (not infected)]⁵

= (0.15 - 0.1)⁵

P(X=1) = 3.125*10⁻⁷

Case 2: P(X=6) = 1- P(X=1)

= 1 - (1 - 0.1)⁵

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2 years ago