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JulijaS [17]
3 years ago
10

Please help:) (15 points)

Mathematics
1 answer:
Trava [24]3 years ago
8 0

Answer:

10.33333 or 31/3 or 10 and 1/3 =x

Step-by-step explanation:

-2=3x-23/4

*4    *4

-8=3x-23

+23   +23

31=3x

/3   /3

10.33333 or 31/3 or 10 and 1/3 =x

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The price of an item has risen to $91 today. yesterday it was $65 l. find the percentage increase
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32 is 90% of what number?
spayn [35]

Answer:

\large\boxed{32\ is\ 90\%\ of\ 35\dfrac{5}{9}}

Step-by-step explanation:

<h3>METHOD 1:</h3>

\begin{array}{ccc}32&-&90\%\\\\x&-&100\%\end{array}\qquad\text{cross multiply}\\\\\\90x=3200\qquad\text{divide both sides by 90}\\\\x=\dfrac{3200}{90}\\\\x=\dfrac{320}{9}\\\\x=35\dfrac{5}{9}

<h3>METHOD 2:</h3>

\begin{array}{cccc}32&-&90\%&\text{divide both sides by 9}\\\\\dfrac{32}{9}&-&10\%\end{array}\\\\\\90\%+10\%=100\%\to32+\dfrac{32}{9}=32+3\dfrac{5}{9}=35\dfrac{5}{9}

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3 years ago
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