danielbahzad danielbahzad

Today at 8:38 AM
Mathematics

Answered

Points A, B and C are collinear. Point B is between A and C. Find x if AC=20, BC=x-19 and AB=x+17.

Answer :

Today at 8:44 AM

Answer:

11

Step-by-step explanation:

20-[(x-19)+(x+17)]

=20-2x+2

=22-2x

As AB+BC=AC, 22-2x=0.

Thus 2x=22

x=11

it should be right

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