The opposite is just 1. Positive 1.
9514 1404 393
Answer:
Step-by-step explanation:
Write the power of ten in standard form and do the multiplication.
2.09 × 10^5 = 2.09 × 100,000 = 209,000
9.4387 × 10^4 = 9.4387 × 10,000 = 94,387
1.3 × 10^-3 = 1.3 × 0.001 = 0.0013
Correct me if I’m wrong but I believe it is 11
21.678 is the Answer because you need to comedian the numbers together