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Oksana_A [137]
3 years ago
14

Katrina paid $24.30 for a backpack that was marked down 10%. Find the original

Mathematics
1 answer:
kotegsom [21]3 years ago
5 0

Answer: $26.73

Step-by-step explanation:

10/100 = 0.1

24.3 * 0.1 = 2.43

2.43 + 24.3 = 26.73

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17% is the answer to the question
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Elimination method: ax+by=r, -bx+cy=s
Alex17521 [72]
\left[\begin{array}{ccc}ax+by=r\\\\-bx+cy=s\end{array}\right]

Isolate x for ax+by=r

x= \frac{r-by}{a} ; a \neq 0

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r=- \frac{as-acy-b^2y}{b} ; a \neq 0;b \neq 0

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Subsititute r = - \frac{as-acy-b^2y}{b}

x= -\frac{as-acy-b^2y}{b}/a

x =  \frac{cy-s}{b}

The solutions to the system of equations are:

r= -\frac{as-acy-b^2y}{b} and <span> x = \frac{cy-s}{b}
</span>
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3 0
2 years ago
((X + 2) + (y - 5) =1​
Viktor [21]

Answer:

on like term

Step-by-step explanation:

x+2)=(y-5)=2+5=7

x-y{x-y]=7x-y

by Emmanuel okorie

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