PLZ HELP!!! i dont know what to d0 :(

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roninmcrae2020 roninmcrae2020

01-04-2021
Mathematics

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PLZ HELP!!! i dont know what to d0 :(

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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

behnkeje24 behnkeje24 · Answer 1 · 2021-04-01T16:14:13+02:00

behnkeje24 behnkeje24

01-04-2021

b. 4, -4, 5, -5

If you set up the __ + __ = b and __ • __ = ac you can plug in 4 for ac and find every number that makes it work then plug those into the other equation to get answers of 4, -4, 5, and -5

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