If B is between A and C, AB=3x, BC=4x and AC=49, what is the value of BC?

1 ⤊

2007-10-18 06:26:59 · 4 answers · asked by Krys F 1 in Science & Mathematics ➔ Mathematics

3x + 4x = 49
7x = 49
x = 7
BC = 4x = 28

ANS:28

2007-10-18 06:29:25 · answer #1 · answered by David F 5 · 1⤊ 0⤋

3x + 4x = 49
4x =4/7(7x) =4/7(49) = 28=BC

2007-10-18 13:38:54 · answer #2 · answered by mulla sadra 3 · 0⤊ 0⤋

|AC|=|AB|+|BC|
49=3x+4x
49=7x

x=49/7=7

|BC|=4x=4 . 7=28

2007-10-18 13:34:06 · answer #3 · answered by iyiogrenci 6 · 0⤊ 0⤋

3x+4x=29
7x=49
x=7
bc=4x=28

2007-10-18 13:29:56 · answer #4 · answered by hawaiis0 3 · 0⤊ 0⤋