AB = 2x + 20, AC = x + 20, and BC = 8. Find AB. Points A, B, C are collinear. Point B is between A and C. Find the length indicated.

asked Jul 2, 2021 19.2k views

2 votes

AB = 2x + 20, AC = x + 20, and BC = 8.

Find AB.

Points A, B, C are collinear. Point B is between A and C. Find the length indicated.

by Qts

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6 votes

AB= 2x+20 cm
BC= 8 cm
AC= x+20 cm

AC= AB + BC
x + 20 = 2x + 20 + 8
2x - x = 20 - 20 - 8
x = -8

AB= 4 cm
BC= 8 cm
AC= 12 cm

Wezelkrozum answered Jul 9, 2021

4.2k points

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