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3 years ago

Suppose two angles are supplementary and one of them measures 31 degress what is the measure of the other angle

1 answer:

6 0

Supplementary means it adds up to 180 degrees.
So if one side is 31 degrees, you would need to subtract that from 180 to find the other side.
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180 - 31 = 149
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The other angle would be 149 degrees.

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Show proof and show work for brainliest

andrew-mc [135]

Answer:

-2(4-1)

Step-by-step explanation:

Do parentheses first because of PEMDAS. That means 4-1 equals 3. Then take -2 and times it by the 3 to get -6.

7 0

3 years ago

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HW 5.2

Marizza181 [45]

Answer:

The probability of no correct answers is 0.125 = 12.5%.

Step-by-step explanation:

For each question, there are only two possible outcomes. Either it is answered correctly, or it is not. The probability of a question being answered correctly is independent of any other question, which means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

3 trials, each with probability of success (correct) given by p=0.50.

This means that $n = 3, p = 0.5$

The probability of no correct answers is

This is P(X = 0).

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{3,0}.(0.5)^{0}.(0.5)^{3} = 0.125$

The probability of no correct answers is 0.125 = 12.5%.

6 0

3 years ago

3 Which of the following numbers would be found

vesna_86 [32]

Answer:

C is the answer

Step-by-step explanation:

35+1=36

35-------------36

5 0

3 years ago

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Assume the random variable X is normally distributed with mean

nignag [31]

Answer:

$P(34$

And we can find this probability with this difference and using the normal standard table or excel:

$P(-2.286$

And the result is illustrated in the figure attached.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(50,7)$