caiyumi13 caiyumi13

10-08-2021
Mathematics

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Points A, B, and C are collinear. Point B is between point A and point C. Find the length of AB if AB=20+x, BC=2x+31, and AC=18. *

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10-08-2021

Answer:

ab=9

Step-by-step explanation:

AB=BC

2X+31=20+X

X=-11

ab= 20+(-11)

= 9

bc= 2(-11) +31

=9

ab+bc= ac

9+9=18

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