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

geometry 
Chopsticks,
5x10=80 x=16
B=2(16)  10 = 22
C= 3(16)+20 = 68
I'm not sure if that's right or not. 
geometry 
Reiny,
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 
geometry 
DM,
Find the pattern
Give the formula
0  8
1  11
2  14
3  17
4 
5 
50 
n 