He assumes that 60-x and 2x-6 are vertical angles, so he equated these two expressions.
60-x=2x-6
60+6=2x+x
66=3x
x=22
Answer:
Step-by-step explanation:
R= C/2pi R
56.52/ 2pi=8.99543738355
Answer to 2 significant figures=9.0
Answer is 42 because i add the 5 + 7 + 8 = 20 then 120/20 = 6 then cheese 5x6 = 30 , bologna 7x6= 42 , peanut butter 8x6= 48

so... you can keep on going towards the negatives with "x", or towards the positives with "x", notice, if the "x" is negative, "y" is just a fraction, positive, but a fraction
and if "x" is positive, "y" is a positive integer
even when x =0, "y" never became 0, and is never negative either
so, the range is, "y" is always positive, but not 0, or
y>0