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
I don't know if this is right for sure but I think that it's 81.25%.
Answer:
19.8
Step-by-step explanation:
Because 10% of 18 is 1.8 so 1.8 + 18 =19.8
Yes;k=-3 and y=-3x is the answer because 2 x -3 = -6 -3 x -3 = -9 and etc..
The answer is the third option. add up all the test scores and divide them by the number of people whose scores you added
which would be three people