weeknd02
weeknd02
29-10-2017
Mathematics
contestada
Please help me with this
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theheckydecky
theheckydecky
29-10-2017
since ABC is equal to DCB, you can use the angles given in triangle ABC in triangle DCB. Since the sum of the angles in a triangle is 180, the equation would be this:
90+46+x=180
Solve for x in that and you're good :)
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Plasmataco
Plasmataco
29-10-2017
use trig so the side with 4x-7 is also equal to 21sin(46)=15 so 4x-7=15.1. thus x=5.52 which is around 6
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