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Mathematics 8 Online
OpenStudy (anonymous):

If B is between A and C, AB=7 and AC=22, what is the value of BC?

OpenStudy (anonymous):

Use segment addition postulate

OpenStudy (anonymous):

22+7

OpenStudy (anonymous):

?

OpenStudy (anonymous):

a=1, b=7, c=22, bc=154

OpenStudy (anonymous):

Draw it out. Draw a line with a, b, and c on it. Write on the line the lengths of the segments you know and it should be easy.

OpenStudy (anonymous):

29

OpenStudy (anonymous):

no, a b and c are all on the same line, so bc cannot be more than ac

OpenStudy (anonymous):

ac is the total length of the line

OpenStudy (anonymous):

No, subtract 7 from 22. That's just the name of the postulate

OpenStudy (anonymous):

ab is the first part of the line and its length is 7. so bc is whats left, which is 22-7

OpenStudy (anonymous):

Exactly what I said, don't overthink, don't be me :P

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