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lesya692 [45]
2 years ago
7

Which graph represents a function?

Mathematics
1 answer:
vesna_86 [32]2 years ago
5 0

Answer:

The last option

Step-by-step explanation:

In order for the graph to be a function it has to pass the vertical line test. If you draw a vertical line through the graph and it only intersects at one point then it is a function.

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A sociologist records the annual household income (in thousands of dollars) among a sample of families living in a high-crime ne
Gnoma [55]

Answer:

The lower quartile is Q_1=33 thousand dollars.

The median quartile is Q_2=39 thousand dollars.

The upper quartile is Q_3=45 thousand dollars.

Step-by-step explanation:

The lower quartile is the median value of the lower half of a data set at the 25th percentile of a distribution.

The median quartile is the median value of a data set at the 50th percentile of a distribution.

The upper quartile is the median value of the upper half of a data set at the 75th percentile of a distribution.

To locate each quartile in a data set, we follow four steps:

Step 1: Put the numbers in order: 23, 25, 33, 34, 39, 39, 44, 45, 48, 55

Step 2: The median is given by \frac{n+1}{2} where n is all scores in the data set.  

Because n = 10, the median position is \frac{10+1}{2}=5.5

The median is the average of the fifth and sixth positioned scores

Q_2=\frac{39+39}{2} =39

Step 3:  Compute \frac{n+1}{2} where n is all scores below Q_2.

For scores below Q_2, use only 23, 25, 33, 34, 39.

Because n = 5, the median position is \frac{5+1}{2}=3

The median is the third positioned score: Q_1=33

Step 4: Compute \frac{n+1}{2} where n is all scores above Q_2.

For scores above Q_2, use only  39, 44, 45, 48, 55

Because n = 5, the median position is \frac{5+1}{2}=3

The median is the third positioned score: Q_3=45

7 0
3 years ago
Ing a Reflection in the
kari74 [83]

Step-by-step explanation:

17) no problem were noticed, just:

reflecting across Y-axis changes the coordinate 'x', no changes for coordinate 'y';

reflecting across X-axis changes the coordinate y, no changes for coordinate 'x'.

For more info see the attached picture.

5 0
2 years ago
Eight less than the product of a number and four.​
olchik [2.2K]

Answer:

4x - 8

Step-by-step explanation:

Let x be the number

  1. "The product of a number and four" means 4x
  2. "Eight less than the product of a number and four" means 4x - 8

I hope this helps!

8 0
3 years ago
Read 2 more answers
Find the perimeter if a = 1 b = 4 c = 6 d = 5
g100num [7]

Answer:16

Step-by-step explanation:

Add each side togeather

4 0
3 years ago
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Simplify the expression: 4x(x2 + 6x - 1) will mark brainliest pls help<3​
Rufina [12.5K]
I think it’s 4x3 + 24x2 - 4x
3 0
3 years ago
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