Non zero digits are always significant. any zeros between two significant digits are significant. a final zero or trailing zero in the decimal portion only are significant.
Answer:
I'm sorry is there a chart/graph, etc. to give us more information?
Without the added information there is no way for me to answer.
If you repost this question with a picture I would be more than happy to help.
C) x = -19/10 because when solving it with substitution u get x=-19/10 & y=153/10
Answer: Row 3
Row 2
6 and 10
Step-by-step explanation: C B A