<span>2 * 10^-4 - 1 * 10^-5
= 10^-4 ( 2 - 1 * 10^-1)
= 10^-4 ( 2 - 0.1)
= 10^-4 (1.9)
= 1.9 * 10^-4
hope it helps</span>
1. No
2. No
3. Yes
4. No, it’s actually 24j -36
6m + 6m + 15m + 15m = 42m
no 40m will not be enough
i don't know how to type the answer out but it's on the work i just did ⬆️