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Sagot :
Answer:
A. 19 units
Step-by-step explanation:
If they were not on the same y-axis, we could use the distance formula to figure it out, but as they are, we can use a simple subtraction problem!
Since the y's are the same, coordinate points are (x, y), we can subtract the x's. We get 21 - 2 = -19. We cannot have a negative distance (unless we are talking about velocity and blah blah, different topic) so it must be positive 19 units!
Note
The Distance Formula Is:
[tex]\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}[/tex]
Hope this helps, have a nice day!
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