What is the value of BC?

1 ⤊

B is the midpoint for segment A C..
AB=3x
AC=7x-5
What is the value of BC?

2007-08-30 16:58:53 · 3 answers · asked by xlhollisterboi 1 in Science & Mathematics ➔ Mathematics

AB + BC = AC
3x + BC = 7x-5 ( solve for BC)
BC = 4x - 5

SO BC is 4x-5

2007-08-30 17:14:56 · answer #1 · answered by james w 5 · 1⤊ 0⤋

2007-08-31 00:10:15 · answer #2 · answered by PERFECT AWESOME!!!! 3 · 0⤊ 1⤋

AB = BC since B is the midpoint

AB + BC = AC
3x + 3x = 7x - 5
6x = 7x - 5
xs = 5

2007-08-31 00:16:45 · answer #3 · answered by Captain Mephisto 7 · 0⤊ 1⤋