Question

express train number appearing in the following standards in standard form​

Answer 1

Answer:

1. $3.84 \times {10}^{8} \: \: \: m$
2. $1.2 \times {10}^{10} \: \: \: \: years$
3. $3 \times {10}^{20} \: \: \: \: m$
4. $1.353 \times {10}^{9} \: \: \: \: \: {km}^{3}$

Hope it helps...