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sdas [7]
2 years ago
11

In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the phys

ics majors, that is the probability that no more than 6 belong to an ethnic minority. True or false?
Mathematics
1 answer:
Shkiper50 [21]2 years ago
8 0

Answer:

False

Step-by-step explanation:

We are told that there is a 33% probability that physics students belong to ethnic minorities, therefore if the sample is 10 people, the amount would be given as follows:

10 * 33% = 3.3 people would be from ethnic minorities. What means of those 10 no more than 4 (to round the number) people belong to an ethnic minority.

Therefore, this statement is false, because it does not represent exactly the probability established in the university.

It is possible to clarify that what affirmation is true part because it fulfills what it says, because the probability says that 4 or less, and the affirmation says that 6 or less, however, the affirmation mentions that it corresponds to the probability of 33% and that if it is false, to correspond it should be between 51% and 60%.

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nikdorinn [45]

1060 / 48 = 22.08 = 22.1

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zheka24 [161]

Answer:

Domain: {-2,6,18}

Range: {-1,2,3}

This relation is not a function.

Step-by-step explanation:

The domain is all of the x values given listed in order from least to greatest and not repeating any numbers. The range is the same thing, but with the y values given. This is not a function because multiple ordered pairs have more than one output for the input. Let's take -2 in these ordered pairs. It has two different outputs, 3 and 2. Because of this, it is not a function.

Hope this helps!!

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2 years ago
Help please............................
Vesnalui [34]

Step-by-step explanation:

csc x / (cot x + tan x)

Write in terms of sine and cosine.

(1 / sin x) / [(cos x / sin x) + (sin x / cos x)]

Multiply top and bottom by sin x.

1 / [cos x + (sin²x / cos x)]

Multiply top and bottom by cos x.

cos x / (cos²x + sin²x)

Use Pythagorean identity.

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3 years ago
Suri solved the equation x squared = 49 and found that x=7. What error did Suri make?
Anastaziya [24]

Answer:

x = \frac{+}{-} 7

Step-by-step explanation:

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\sqrt{49} can equal 7 or -7

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7 0
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2- 20
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Because you do the same thing just going to end up with a negative.
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