annaston
annaston
23-01-2017
Mathematics
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Help please!!!!!!!!!!!
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papabravo02
papabravo02
23-01-2017
It is 45 degrees, because it is one half of a 90 degree angle. And also, n = 15.
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merxinda
merxinda
23-01-2017
Letter n=13. Because...
3n+4n-15=90
7n-15=90
+15 +15
7n=105
7n/7=105/7
N=13
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