Answer:
Step-by-step explanation:
11.-3(2x-8)=-12
-6x+24=-12
-6x=-12-24
x=-36/-6
x=6
12.4(6+2x)=0
24+8x=0
8x=0-24
x=-24/8
x=-3
13.3x+2x+6=-15
5x+6=-15
5x=-15-6
x=-21/5
14.4=-2(x+3)
4=-2x-6
4+6=-2x
10/-2=x
-5=x
15.27=46+2x-x
27=46+x
27-46=x
-19=x
Answer:
No sides equal means scalene.
All angles less than 90 degrees acute triangle.
http://www.1728.org/triang.htm
Step-by-step explanation:
Answer:
Proved
Step-by-step explanation:

Take the Left Hand Side:




Hence Proved!
The following identities were used are attached in an image