geometry
posted by sarah on .
Find the longest side of triangle ABC, if measurement A=70, measurement B=2x10, and measurement C=3x+20.

5x10=80 x=16
B=2(16)  10 = 22
C= 3(16)+20 = 68
I'm not sure if that's right or not. 
I will assume that by "measurement A=70" you are referring to angle A
then 70 + 2x10 + 3x+20 = 180
5x = 100
x = 20
then angle B = 30 and
angle C = 80
knowing that in any triangle, the largest side is opposite the largest angle, the largest side must be opposite angle C, which would be AB 
Find the pattern
Give the formula
0  8
1  11
2  14
3  17
4 
5 
50 
n 