given: triangle ABC.
Line DE is parralel with line BC.
Points D and E are mid points of AC and AB
What is X if BC is 5X+8 and DE is 4X+3
2006-12-21 08:05:16 · 9 answers · asked by assecro 2 in Science & Mathematics ➔ Mathematics
explanation why would be nice
2006-12-21 08:12:34 · update #1
2/3
2006-12-21 08:11:03 · answer #1 · answered by supergirl888 2 · 0⤊ 0⤋
I first would try drawing a triangle and label it ABC. Put a midpoint on AC and label it E and put another midpt on AB and label it D.
DE is called the midsegment of a triangle. DE is half the length of BC.
so, 2(4x+3)=5x+8
distribute 2 to the ()
8x+6=5x+8
subtract 5x from both sides
3x+6=8
subtract 6 from both sides
3x=2
divide
x=2/3
2006-12-21 18:32:22 · answer #2 · answered by wheels 2 · 1⤊ 0⤋
D & E are mid point of AC & AB means that ED are half of BC.
So,
BC/2 = DE
5x + 8 = 2*(4X +3)
5x + 8 = 8X + 6
3X = 2
X = 2/3
2006-12-21 16:14:22 · answer #3 · answered by Cu Den 2 · 0⤊ 0⤋
DE is half of BC
4x+3=1/2(5x+8)
8x+6=5x+8
3x=2
x= 2/3
2006-12-21 16:09:57 · answer #4 · answered by 7 · 1⤊ 0⤋
DE= 1/2 BC
4x+3= 0.5(5x+8)
2006-12-21 16:15:15 · answer #5 · answered by Anonymous · 0⤊ 2⤋
How about 1. The only and lonely 1. x=1.
2006-12-21 16:21:22 · answer #6 · answered by Ottawan-Canada 3 · 0⤊ 1⤋
Since DE is parallel to BC,
AD * BC = 2AD * DE
BC = AD * DE
5x + 8 = AD *(4X + 3)
AD = (5x + 8) / (4x + 3)
Sorry got to go - trig was never my strong suit
2006-12-21 16:32:40 · answer #7 · answered by Math geek 3 · 0⤊ 2⤋
6 square.
2006-12-21 16:10:00 · answer #8 · answered by Anonymous · 0⤊ 1⤋
i like geometry
2006-12-21 16:12:50 · answer #9 · answered by haat 5 · 0⤊ 1⤋