2. IS a decimal form
2+6+7+9=24
3.482 x 10^9
5.3 x 10^0 or just 5.3
5/8 = .625 you are both incorrect. Now EIGHT divided by FIVE IS 1.6
3-3*6+2 = 3 - 18 +2 = -15 +2 = -13 You have to do the MULTIPLICATION first , then the addition or subtraction.
6.25 x 10^2
There are 1000 billions in a trillion , so multiply by 1000
3,730 Billion
12% of 12 is 12/100 x 12 = 1.44
There is an error here somewhere
6x-14 = 6x - 15 Subtract 6x from both sides
-14 = -15 Not possible !