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Ganezh [65]
3 years ago
10

Describe a function​

Mathematics
1 answer:
Vesnalui [34]3 years ago
5 0

Answer:

A function is a process or a relation that associates each element x of a set X, the domain of the function, to a single element y of another set Y (possibly the same set), the codomain of the function

Step-by-step explanation:

A function is uniquely represented by the set of all pairs (x, f (x)), called the graph of the function.

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Write the domain as an inequality​
Pavlova-9 [17]

Answer:

x\leq 0

Step-by-step explanation:

The domain is the span of x-values covered by the graph.

From the graph, we can see that the x-values covered by the graph is all values to the left of zero including zero.

Therefore, the domain is all x-values less than or equal to 0:

x\leq 0

Further notes:

In interval notation, this is:

(-\infty,0]

4 0
3 years ago
Read 2 more answers
A researcher studying reaction time of drivers states that, "A 95% confidence interval for the mean time (8.1) it takes for a dr
Sergio039 [100]

Answer:

For this case we know that the confidence interval is given by (1.2 , 1.8) and the point of estimate for \mu would be:

\bar X = \frac{1.2+1.8}{2}= 1.5

And the margin of error is given by:

ME = \frac{1.8-1.2}{2}= 0.3

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

For this case we know that the confidence interval is given by (1.2 , 1.8) and the point of estimate for \mu would be:

\bar X = \frac{1.2+1.8}{2}= 1.5

And the margin of error is given by:

ME = \frac{1.8-1.2}{2}= 0.3

6 0
4 years ago
What is 135% of 62?<br><br><br>A: 8. 37<br><br>B: 83. 7<br><br>C:837<br><br>D:8370
Dimas [21]
83.7 goodlucks! hope it os right
7 0
3 years ago
What you would do if Jesus came to your house.
postnew [5]

Answer:

Give him a Big hug and be so happy

7 0
3 years ago
Read 2 more answers
Please help me with this I will mark you as brainliest!
Sedaia [141]

Answer:

21, 42, 63, 84

Step-by-step explanation:

Numbers that have a star and a circle on them are all multiples of 3 and 7. As there are less multiples of 7 between 1-100 we should list the multiples of 7 and then check if they are also multiples of 3.

7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98

A quick way of calculating if a number is a multiple of 3 is to see if its digital root is either 3, 6, or 9

7 is not as 7 is not a multiple of 3

14 is not as 1+4 = 5 is not a multiple of 3

21 is, as 2+1 = 3 is a multiple of 3

28 is not, as 2+8 = 10 is not a multiple of 3

35 not, 3+5=8

42 is, 4+2=6

49 is not, 4+9=13

56 is not , 5+6=11

63 is, 6+3=9

70 is not, 7+0=7

77 is not, 7+7=14, 1+4=5

84 is, 8+4=12, 1+2=3

91 is not, 9+1=10 1+0 = 1

98 is not, 9+8=17, 1+7=8

6 0
3 years ago
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