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konstantin123 [22]
3 years ago
5

Someone please help me. I don't have a pen and paper to work this out

Mathematics
2 answers:
earnstyle [38]3 years ago
5 0
I hope this helps you





GarryVolchara [31]3 years ago
3 0
All the angles have to equal 360 degrees. so that means you would add all the angles together. Since there is one variable and not a lot of multiplication or other things you can just add all like terms so you would have a constant and then an x term that would sum up to 360, make sure to take into account the signs of each number. then solve for x by adding 15 to both sides and then dividing by 25 on both sides to get x=15.

4x+11x+2x+8x-17-3-4+9=360
25x-15=360
25x-15+15=360+15
25x/25=375/25
x=15

So c would be your answer
 
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