To get the answer you have to add 29.4 and 13.9 and you get 43.3
It is A
<span>2.1e-10
= 2.1 x 10^-10
= 0.00000000021
hope it helps</span>
I'm not really sure because I have not done this in a while but I think True
Step-by-step explanation:
...
B) thousands
5 is ones
7 is tens
7 is hundreds
9 is thousands
1 is ten thousands
2 is hundred thousands.
