For this case we must indicate the correct sign between the following numbers:

We have to:

So, we have to 
Answer:

Answer:
66.69
Step-by-step explanation:
You start off with -3.9 x -5.7 which gives you a positive, and that positive is 22.23, then you multiply that number by 3, and you get 66.69.
Answer:
10 miles if im not wrong
Step-by-step explanation:
Answer:
has 3 significant figures
Step-by-step explanation:
because zeros are counted if they are between the numbers
T = -4.5
Answer is One solution.