# SOLUTION: Suppose M is between L and N. Use the segment addition postulate to solve for this variable. Then find the lengths of LM MN and LN LM 7y+9 MN= 3y+4 LN = 143 thank y

Algebra ->  Algebra  -> Test -> SOLUTION: Suppose M is between L and N. Use the segment addition postulate to solve for this variable. Then find the lengths of LM MN and LN LM 7y+9 MN= 3y+4 LN = 143 thank y      Log On

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 Question 209180: Suppose M is between L and N. Use the segment addition postulate to solve for this variable. Then find the lengths of LM MN and LN LM 7y+9 MN= 3y+4 LN = 143 thank youAnswer by nyc_function(2733)   (Show Source): You can put this solution on YOUR website!In geometry, the segment addition postulate states that if B is between A and C, then AB + BC = AC. We can apply this rule to answer your question. L----------M----------N 7y + 9 + 3y + 4 = 143 10y + 13 = 143 10y = 143 - 13 10y = 130 y = 130/10 y = 13 ======================= LN = 7y + 9 LN = 7(13) + 9 LN = 100 ======================= MN = 3y + 4 MN = 3(13) + 4 MN = 39 + 4 MN = 43 ====================== You were given LN to be 143. So, there's no need to find it.