Answer :
2)
a) the number is: 0.000000045 so in scientific notation will be:
[tex]0.000000045=4.5\times10^{-8}[/tex]b) the number is 246:
[tex]246=2.46\times10^2[/tex]c) the number is 0.000234
[tex]0.000234=2.34\times10^{-4}[/tex]d) the number is 698.4
[tex]698.4=6.984\times10^2[/tex]e) the number is 0.469
[tex]0.469=4.60\times10^1[/tex]f) the number is 0.00000000000000000002 so:
[tex]0.00000000000000000002=2.0\times10^{-20}[/tex]3)
a) The number is 1.53x10^-3
[tex]1.53\times10^{-3}=0.00153[/tex]b) the number is 8.54x10^4 so:
[tex]8.54\times10^4=85400[/tex]c) the number is 6.04x10^6 so:
[tex]6.04\times10^6=6040000[/tex]d) the number is 4.234x10^-5 so:
[tex]4.234\times10^{-5}=0.00004234[/tex]e) the number is 4.0x10^2
[tex]4.0\times10^2=400[/tex]f) the number is 3.4567x^6
[tex]3.4567\times10^6=345670[/tex]