AB = x - 10, BC = x + 2, and AC = 28. Find BC.Please help!
2 answers:
Answer:
BC = 20
Step-by-step explanation:
Since line segment AC = 28, that means line segment AB and line segment BC must add up to 28:
x - 10 + x + 2 = 28
2x - 8 = 28
2x = 36
x = 18
Now we plug in <em>x</em> into segment BC's equation to find length of BC:
BC = x + 2
BC = 18 + 2
BC = 20
Answer:
BC = 20
Step-by-step explanation:
AC = AB + BC
28 = x-10 + x+2
Combine like terms
28 = 2x -8
Add 8 to each side
28+8 = 2x-8+8
36 = 2x
Divide by 2
36/2 = 2x/2
18 =x
We want to find BC
BC = x+2
=18+2
=20
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