Answer for number 1
Scientific: 3×[tex]10^{2}[/tex]
Standard: 300
Steps:
Reduce the fraction with 3.
3× [tex]10^{9}[/tex] / [tex]10^{7}[/tex]
Simply the expression.
3×[tex]10^{2}[/tex]
Evalulate the power & Multiply the numbers
3×100 = 300
Answer for number 2
Scientific: 4.5×[tex]10^{5}[/tex]
Standard: 450000
Steps: Separate the fraction into 2 fraction.
[tex]\frac{9.45}{2.1}[/tex]×[tex]\frac{10^{7} }{10^{2} }[/tex]
Divide the numbers and Divide the terms with the same bases by subtracting their exponents.
4.5×[tex]10^{7-2}[/tex]
Subtract the numbers and you get
4.5×[tex]10^{5}[/tex]
Answer for number 3
Scientific: 1.5×[tex]10^{-3}[/tex]
Standard: 0.0015
Steps: Separate the fraction into 2 fractions
[tex]\frac{7.5}{5}[/tex]×[tex]\frac{10^{-5} }{10^{-2} }[/tex]
Divide the numbers. Divide the terms with the same base by subtracting their exponents.
1.5×[tex]10^{-5-(-2)}[/tex]
Calculate the sum and you get 1.5×[tex]10^{-3}[/tex]
Hope this helps ʕ•ᴥ•ʔ
