Leo34005
Sep6-09, 12:06 PM
1. The problem statement, all variables and given/known data
AB ≅ CD. Find the length of BD.?
http://i214.photobucket.com/albums/cc4/twinkie34005/img42.gif
AB ≅ CD. Find the length of BD.
2. Relevant equations
A) 8
B) 10
C) 4
D) 7
E) -7
3. The attempt at a solution
AB = 2x + 5x + 7 = 7x + 7
CD = 5x + 7 + 3x - 4 = 8x + 3
AB ~= CD
7x + 7 = 8x + 3
7 - 3 = 8x - 7x => x = 4
BD = 3x - 4 = 3(4) - 4 = 8
ans: A) 8
AB ≅ CD. Find the length of BD.?
http://i214.photobucket.com/albums/cc4/twinkie34005/img42.gif
AB ≅ CD. Find the length of BD.
2. Relevant equations
A) 8
B) 10
C) 4
D) 7
E) -7
3. The attempt at a solution
AB = 2x + 5x + 7 = 7x + 7
CD = 5x + 7 + 3x - 4 = 8x + 3
AB ~= CD
7x + 7 = 8x + 3
7 - 3 = 8x - 7x => x = 4
BD = 3x - 4 = 3(4) - 4 = 8
ans: A) 8