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In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?

a. 2.84 times 10^{-3}
b. 5.63 times 10^{-3}
c. 7.7 times 10^{-7}
d. 12.42 times 10^{-12}

Sagot :

Tomek1172idn
[tex]2,3 \cdot 10^{-3}+5,4\cdot 10^{-4}=\\ 2,3 \cdot 10^{-3}+0,54 \cdot 10^{-3}=\\ 2,84\cdot 10^{-3}\\ \\ Answer:A[/tex]
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