kristasearles
kristasearles kristasearles
  • 22-02-2018
  • Mathematics
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(5)
I used the triangle-angle-bisector theorem to do 7.2/19.3 = 3.9/x, then I cross multiplied and got 75.27 = 7.2x and x = (roughly) 10.45, rounded to the nearest tenth is 10.5

5 I used the triangleanglebisector theorem to do 72193 39x then I cross multiplied and got 7527 72x and x roughly 1045 rounded to the nearest tenth is 105 class=

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jimthompson5910 jimthompson5910
  • 24-02-2018
Yes this is correct. Nice job.

An alternative equation is x/3.9 = 19.3/7.2 which leads to the same answer. 
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