Answer:
Number 7: Is the same triangle.
Step-by-step explanation:
Hope this helps. :D
First you distribute, you will be left with 8s-12=3s+1
then you will add 12 on each sides, and subtract 3s on each side, you'll be left with 5s=11 then you will divide by 5 on each sides s=2.2
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Answer:
120
Step-by-step explanation:
A triangles angles always add to 180 degrees.
180=20+40+x
180-20=160
160-40=120
120=x