Question

plz tell hw ......plz urgent tomorrow exam........plz!!!

Answer 1

ʜᴇʟʟᴏ ᴍᴀᴛᴇ!

$3 \times {10}^{8} m {s}^{ - 1} \times 300s \\ 900s \: \times {10}^{8} m {s}^{ - 1} \\ 9 \times {10}^{2} s \times {10}^{8} m {s}^{ - 1} \\ 9 \times {10}^{2 + 8} \times m { s}^{1 - 1} \\ = 9 \times {10}^{10} m$
Hope it helps

Answer 2

This is because when we multiply both the number their product will be like this (second will cancel other second) So that there will be (m).
=>(300000000x300)m=90000000000
=>9x10^10

Hope it helps you........