9. Describe in your own words how you can tell whether an equation has an infinite number of solutions or no solution at all.
10. Solve:
10x+2(x-6)=3(4x-4)
11. Solve:
2(9x-6)=6(3x-2)+2
12. Solve:
8+4x=2x+8+2x

If you use photo math it gives you answers to everything i’ve put it in and it’ll show you how to get the answers too. Like say if you need to show your work you can copy what it shows on there.

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle