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3) A is between B and C. If BC= 8x + 5, AB= 2x + 4, and AC= 3x + 7, then

find AB

User Rami Yusf
by
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1 Answer

1 vote

Answer:

AB = 8

Explanation:

A is between B and C. If BC= 8x + 5, AB= 2x + 4, and AC= 3x + 7, then find AB

Step 1

Find x

BC = AB + AC

8x + 5 = 2x + 4 + 3x + 7

Collect like terms

8x - 2x - 3x = +4 + 7 - 5

3x = 6

x = 2

Step 2

Find AB

= AB= 2x + 4

AB = 2(2) + 4

AB = 4 + 4

AB = 8

User Tony Cesaro
by
8.6k points

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