2.1+18.9
The answer is going to be 21 because 9+1=10, you then carry the 1 for 8 so it’s going to be 9+2 which equals to 11 now you carry the 1 to the 1 so it’ll be 2. Therefore it’s 21.0 or just cancel out the 0 and just leave it as 21.
Kaleerain5,
In order to get your answer you must remember that if the exponent is negative move to the left and if the exponent is positive you have to move to the right.

- The exponent is negative so move to the left:


Therefore your answer is ".000857."
Hope this helps!
What’s the question supposed to be. or is it even supposed to be a question
C because u have 3/7 which is a fraction
Answer:
Could you post the question in the comments?
Step-by-step explanation: