Answer:
4.5
Step-by-step explanation:
i think that is the answer
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:
15,15,15,
Step-by-step explanation:
48=12+12+12+12
48=(12+3)+(12+3)+(12+3)+(12+3)
Answer:

We know that
and using this identity we have:


And if we remember the equation above represent the fundamental identity in trigonometry and is satisfied for every real number and we can say that the solution for this case is:
![A= [X | x \in R]](https://tex.z-dn.net/?f=%20A%3D%20%5BX%20%7C%20x%20%5Cin%20R%5D)
Step-by-step explanation:
For this case we have the following equation given:

We know that
and using this identity we have:


And if we remember the equation above represent the fundamental identity in trigonometry and is satisfied for every real number and we can say that the solution for this case is:
![A= [X | x \in R]](https://tex.z-dn.net/?f=%20A%3D%20%5BX%20%7C%20x%20%5Cin%20R%5D)
Answer:D
Step-by-step explanation: