Answer:
10
Step-by-step explanation:
Negative times a negative is a positive.
so 12-2=10
rules to find :- 1 All non zeroes number are significant
2 if zero proceeding the decimal point also work as non zero figure
3 zero are following the decimal point and proceeding the first non zero digit
4 Zero in between 2 non zero digits are also significant
5 if 1 zero follow the decimal point
790 :- 2 significant figures
0.0391 :- 3 significant figures ( follow 3 rule)
81.05 :- 4 significant figures ( rule 4)
0.000001 :- 1 significant figure
8546 :- 4 significant figures
79.0 :- 3 significant ( rule 5)
Answer:
flipping coin
Step-by-step explanation:
Answer:
5.6 x 10 2
Step-by-step explanation:
Answer: -37 & -3
Step-by-step explanation:
-20-17= -37
-20+17= -3