![1.2\cdot10^{28}\cdot3\cdot10^{-19}\\=(1.2\cdot3)\cdot(10^{28}\cdot10^{-19})\\=3.6\cdot10^{28+(-19)}.....[\text{by using law of exponents }a^ma^n=a^{m+n}]\\=3.6\cdot10^{28-19}\\=3.6\cdot10^9](/tpl/images/0206/7369/022b9.png)
a) 3.6 ⋅ 109
Mathematics, 28.08.2019 21:30 lilay30
Multiply (1.2 ⋅ 1028) ⋅ (3 ⋅ 10−19). express the answer in scientific notation.
a) 3.6 ⋅ 109
b) 3.6 ⋅ 1010
c) 36 ⋅ 109
d) 36 ⋅ 1010
Answers: 2
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Multiply (1.2 ⋅ 1028) ⋅ (3 ⋅ 10−19). express the answer in scientific notation.
a) 3.6 ⋅ 109
a) 3.6 ⋅ 109
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