Sorry, but I don't under stand what you are talking about.
Your answer is C. Think of the x axis as the ground.
Equations -
I like to find the decimal expression of the fractions, to make this easier.
Divide each sides by 0.6
Answer: 6/7
If you mean find the one that has the number 1 on it your answer is 13.
90+77+x=180
167+x=180
X=13
Answer:
4 is in the tenths place. 9 is in the ones. 5 is in the hundredths. 3 is in the thousandths.