Can someone please help with these few questions i have?! Itd algebra!! they are attached :) extra points!

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kyleemarie2003 kyleemarie2003

04-05-2018
Mathematics

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Can someone please help with these few questions i have?! Itd algebra!! they are attached :) extra points!

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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

find the circumference of a circle whose radius is 15.4cm

altavistard altavistard · Answer 1 · 2018-05-04T22:23:50+02:00

altavistard altavistard

04-05-2018

Here, "perimeter" means "sum of the lengths of the sides."

So, we want P = (x^2-1) + (x-1) + (x^2+1).

Combine like terms. We get: 2x^2 + x - 1 (answer)

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