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sashaice [31]
2 years ago
15

5) The sales tax in the town where Amanda lives is 5%. Amanda paid $35

Mathematics
1 answer:
8_murik_8 [283]2 years ago
4 0

Answer:

$700

Step-by-step explanation:

Given that,

The sales tax in the town where Amanda lives is 5%.

Amanda paid $35  in sales tax on a new stereo.

We need to find the price of the stereo. Let it is x. Using the formula for percentage as follows :

\%=\dfrac{\text{sales tax}}{\text{total}}\times 100\\\\5\%=\dfrac{35}{x}\times 100\%\\\\x=\dfrac{35\times 100\%}{5\%}\\\\=\$700

So, the price of the stereo is $700. Hence, the correct option is(c).

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The area of a rectangle is 144cm squared.if the length is 16cm. What's the perimeter?​
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Answer:

50

Step-by-step explanation:

lxb=144

16xb=144

b=9

perimeter=2(l+b)

=2(16+9)

=50 cm

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In the International Grandmaster Championship, a total of 105 games were played where each team played exactly one game with all
olga2289 [7]

Answer: 15 teams

Step-by-step explanation:

Total number of games played in the tournament = 105

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To obtain total number of games played =

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However, the teams played against each other only once :

Therefore, total number of games played:

[p × (p-1)] / 2

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[p × (p-1)] / 2 = 105

p × (p-1) = 105 × 2

p × (p-1) = 210

p^2 - p = 210

p^2 - p - 210 = 0

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p(p - 15) +14(p-15) = 0

(p - 15) = 0 or (p + 14) = 0

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Number of teams can't be negative

Therefore p = 15

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3 0
2 years ago
Decrease 125 by 40% maths assignment
lyudmila [28]

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BARSIC [14]

Answer:

x=\frac{1}{4}

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Step-by-step explanation:

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8x + y = 0

4x-y=3

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\begin{bmatrix}8&1&0\\4&-1&3\end{bmatrix}

Solve using reduced row reduction (RREF)

\begin{bmatrix}8&1&0\\4&-1&3\end{bmatrix}

\begin{bmatrix}8&1&0\\8&-2&6\end{bmatrix}

\begin{bmatrix}8&1&0\\0&-3&6\end{bmatrix}

\begin{bmatrix}8&1&0\\0&-1&2\end{bmatrix}

\begin{bmatrix}8&0&2\\0&-1&2\end{bmatrix}

\begin{bmatrix}1&0&\frac{2}{8}\\0&1&-2\end{bmatrix}

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