Find the median of the data

Mathematics

1 answer:

nadya68 [22]2 years ago

5 0

The median is the middle number of the data plot. Since there 30 numbers, there isn't a exact middle. To find the median you must add the two middle number then divide by 2.

In this case you must add 87 and 88 which gives 175.

Then divide 175 by 2 which gives 87.5

87.5 is the median

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2 years ago

Read 2 more answers

Help me please and thanks

leva [86]

Answer:

A. (1, -4)

Step-by-step explanation:

You can try the answers to see which works. (The first one does.)

Or, you can solve the equations algebraically. Equating y-values works well here:

2x -6 = -2x -2

4x = 4 . . . . . . . add 2x+6 to both sides; next divide by 4

x = 1 . . . . . . . . shows you selection A is correct

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A graphing calculator can show you the point of intersection. Perhaps this is the way to go, since the unit seems to be on graphing systems of equations. Both of these equations are in slope-intercept form (y=mx+b), so are easily graphed by starting from the y-intercept (b) and using the slope (m=rise/run) to find another point on the line.