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e-lub [12.9K]
3 years ago
13

Point m is the midpoint of ab¯¯¯¯¯ . am=2x+9, and ab=8x−50. what is the length of am¯¯¯¯¯¯ ?

Mathematics
1 answer:
iogann1982 [59]3 years ago
7 0
Since m is the midpoint of ab, then the following relationship is fulfilled:
 am =  \frac{ab}{2}
 Therefore, substituting values we have:
 2x+9 = \frac{8x-50}{2}
 From here, we clear the value of x.
 We have then:
 2x+9 = 4x-25
 9+25 = 4x-2x
 34 = 2x
 x =  \frac{34}{2}
 x = 17
 Then, the value of am, is given by substituting x in the expression:
 am=2x+9
 Substituting we have:
 am=2(17)+9
 am=34+9
 am=43
 Answer:
 
the length of am is:
 
am=43
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