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lisabon 2012 [21]
3 years ago
5

Charlene paid $1540.77 (including sales tax) for a microscope. The sales tax in her state is 7%.

Mathematics
1 answer:
BARSIC [14]3 years ago
3 0

Answer:

1,439.97

Step-by-step explanation:

Price x 1.07 = price including sales tax

price x 1.07=1540.77

price=1540.77/1.07

price= 1439.97

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Answer:

\rm Numbers = 4 \ and \ -3.

Step-by-step explanation:

Given :-

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\rm\implies 1st \ number * 2nd \ number= -12\\\\\rm\implies x(1-x)=-12\\\\\rm\implies x - x^2=-12\\\\\rm\implies x^2-x-12=0\\\\\rm\implies x^2-4x+3x-12=0\\\\\rm\implies x(x-4)+3(x-4)=0\\\\\rm\implies (x-4)(x+3)=0\\\\\rm\implies\boxed{\red{\rm x = 4 , -3 }}

Hence the numbers are 4 and -3

4 0
3 years ago
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Answer:

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