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3 years ago

Point B is between points A and C. If AB = 3x -1, BC=9x+8, and AC=139, find the measure of BC

Mathematics

1 answer:

Cloud [144]3 years ago

4 0

Answer:

BC = 107

Step-by-step explanation:

Point B is between A and C.

AB = 3x-1

BC = 9x+8

AC = 139

We need to find BC for which we need to find x first.

<u>Finding 'x':</u>

We know that AB + BC = AC

*putting the values of AB, BC and AC*

3x-1+9x+8 = 139

12x+7=139

12x=132

x=132/12

x=11

Now, BC = 9x+8 = 9(11) +8

BC = 99+8

BC = 107

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Option A

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