Simply the square root of negative 50

Mathematics

1 answer:

ZanzabumX [31]3 years ago

8 0

Answer:

5√2

I think, that sign mean square root.. just letting you know.

Hope I helped!

<em>*simplyeliza*</em>

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a = amount invested at 5%

b = amount invested at 2%

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now, we know the total of earned interest is 550 bucks, so then

$0.05a~~ + ~~0.02(20000-a)~~ = ~~550\implies 0.05a+400-0.02a=550 \\\\\\ 0.03a+400=550\implies 0.03a=150\implies a=\cfrac{150}{0.03}\implies a=5000 \\\\\\ ~\hspace{24em}\stackrel{20000~~ - ~~5000}{b=15000}$