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erma4kov [3.2K]
3 years ago
6

Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x=12. y=

-10 when x=2
Mathematics
1 answer:
kramer3 years ago
4 0
Y = 20x + 7 for instance
then just substitute the values
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Identify all sets to which the number below belongs:
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The owner of a catering company wants to select a random sample of clients to find out about their food preferences.
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Random sampling is defined as a method of selecting a sample from any population in such a way that every selected sample had a predetermined probability of being selected.

So,the true statements for this scenario are :

The owner chooses 20 of the slips of paper without looking.

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3 years ago
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Josh travels frequently. For a particular airline, it takes 20 minutes for the first bag to arrive in baggage claim after a flig
Orlov [11]

Using the uniform distribution, it is found that:

A,B) 0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.

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An uniform distribution has two bounds, a and b.  

The probability of finding a value of at lower than x is:

P(X < x) = \frac{x - a}{b - a}

The probability of finding a value between c and d is:

P(c \leq X \leq d) = \frac{d - c}{b - a}

The probability of finding a value above x is:

P(X > x) = \frac{b - x}{b - a}

--------------------------

  • In the graph, we have that the distribution is uniform between 20 and 30 minutes, thus a = 20, b = 30

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Itens a and b:

  • Above 27 minutes, thus:

P(X > 27) = \frac{30 - 27}{30 - 20} = 0.3

0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.

--------------------------

Item c:

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P(X < 2) = \frac{22 - 20}{30 - 20} = 0.2

0.2*100 = 20%

20% of the time does Josh’s bag arrive in less than 22 minutes.

A similar problem is given at brainly.com/question/15855314

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3 years ago
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To round the answer to the nearest tenth, we need to choose between 7.3 and 7.4. Since the hundreths digit is 1, which is less than 5, 7.3 is nearest to 7.3152 than 7.4, so the correct answer is 7.3

3 0
3 years ago
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The function f(x) is graphed below. What is true about the graph on the interval from x=−∞ to x=a?
xxMikexx [17]

Answer:

The correct answer for the question that is being presented above is this one: "The range of the function is all real numbers; The function has two x-intercepts. The statements about the graph of the function f(x) = 2x2 – x – 6 that are true includes: The range of the function is all real numbers; The function has two x-intercepts.

Step-by-step explanation:

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