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Perform this mathematical operation and express the answer to the correct number of significant figures: 1.285 x 10-2 - 1.24 x 10-3 A) 0.01161 B) 1.16 x 10-2 C) 1.16 x 102 D) 1.59 x 10-5​

Perform this mathematical operation and express the answer to the correct number of significant figures: 1.285 x 10-2 - 1.24 x 10-3 A) 0.01161 B) 1.16 x 10-2 C) class=

Answer :

devishri1977

Answer:

B)

Step-by-step explanation:

[tex]1.24*10^{-3) = 1.24 * 10^{-1}*10^{-2} = 0.124 * 10^{-2}[/tex]

[tex]1.285*10^{-2} - 1.24*10^{-3}=1.285*10^{-2} -0.124*10^{-2}\\\\ = (1.285 - 0.124)*10^{-2}\\\\= 1.161 *10^{-2)\\\\= 1.16 *10^{-2}[/tex]

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