<PRE><B>Question 97568</B>
draw a line on paper. on th left end of the line put an A. on the right end put a C. Dead in the middle put a dot. above the dot write B.
on the line between A and B write 8v. since B is the midpoint we know that line BC=8v also. Also, AC (the whole line)=3v+42
so, 2*8v=3v+42
16v=3v+42
subtract 3v from both sides. 13v=42
divide 13 into both sides. v=3.23
what is BC? v8. and v=3.23. Therefore v8=3.23*8=25.84
BC=25.84
Check:
2*25.84=3*3.23+42
51.68=51.69 (rounding error of .01)
Ed
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