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Usimov [2.4K]
3 years ago
5

a cost of a pen is unknown the cost of the notebook is 30 cents more than the pen mary brought 8 pens and 5 notebooks and spend

8 dollars calculate the cost of the pen and the notebook​
Mathematics
1 answer:
Cloud [144]3 years ago
7 0
The answer is 30 cents
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Dafna1 [17]
0.044 as a fraction is 44/1000

Simplified is 11/250

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Determine whether set of values represents an inverse variation. If yes, identify the constant of variation and write an inverse
Natasha_Volkova [10]

SOLUTION

If the table represents an inverse variation, it means that y is inversely proportional to x, written as

\begin{gathered} y\propto\frac{1}{x} \\ \propto is\text{ a sign of proportionality } \end{gathered}

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\begin{gathered} y=k\times\frac{1}{x} \\ y=\frac{k}{x} \end{gathered}

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\begin{gathered} y=\frac{k}{x} \\ 3.5=\frac{k}{-4} \\ k=3.5\times-4 \\ k=-14 \end{gathered}

So, if it's an inverse variation, the relationship would be

y=\frac{-14}{x}

In the second column, x = -2 and y = 7.

Now lets substitute the value of x for -2. If we get y to be 7, then the relationship is an inverse variation

We have

\begin{gathered} y=\frac{-14}{x} \\ y=\frac{-14}{-2} \\ y=7 \end{gathered}

Since we got y = 7, the relationship is therefore an inverse variation.

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The equation for the inverse variation is

y=\frac{-14}{x}

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What is the volume of the shoebox with the dimensions shown in the figure?
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4 in 5 in 12 in is a denominator is a thing of tostadas
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What is greatest common factor of 175 and 280
laila [671]

Answer:

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4 0
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During a basketball practice, Mai attempted 49 free throws and was on 25% of them. How many successful free throws did she make?
Brrunno [24]

Mai made 12 successful free throws.

Step-by-step explanation:

Given,

Free throws made by Mai = 49 free throw

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Number of successful throws = 25% of free throws

Number of successful throws = \frac{25}{100}*49

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Rounding off to nearest whole number;

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Mai made 12 successful free throws.

Keywords: percentage, division

Learn more about division at:

  • brainly.com/question/11150876
  • brainly.com/question/11175936

#LearnwithBrainly

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