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m_a_m_a [10]
3 years ago
14

SOS NEED HELP I HAVE TO TURN THIS PAPER IN BY 12:00 A bag contains 5 blue marbles, 4 white marbles, and 3 red marbles. If 3 marb

les are randomly selected from the bag, what is the probability that exactly 2 of the 3 marbles selected will be the same color? 18 POINTS UP FOR GRABS PLEASE HELP ME
Mathematics
1 answer:
Lemur [1.5K]3 years ago
6 0

In a fraction or decimal


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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}

Removing the proportionality sign and introducing a constant k, we have

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

In the first column, we have x = -4 and y = 3.5. Substituting these values for x and y, we have

\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.

The constant k = -14

The equation for the inverse variation is

y=\frac{-14}{x}

3 0
1 year ago
What value of x is in the solution set of 3(x - 4) 5x + 2?<br> O -10<br> 05<br> 05<br> O 10
djverab [1.8K]
Id have to say 5
Explanation: distributive property
Sorry if that’s wrong

-HOPE THAT HELPED!! <3

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2 years ago
If a bus travels 20 km in 30 minutes. What is the average speed of the bus?
sattari [20]
<span>So we need to find the average speed of the bus that travels 20 km in 30 minutes. Average speed is defined as: Average speed=distance travelled/time taken or: v=s/t. We know s=20 km and t=30 minutes=0.5h. So after we input our numbers in the equation, we get: v=20km/0.5h=40km/h. So the correct answer is C) 40km/h.</span>
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Ms Girl we on the Same Note tbh
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Simplify 12 to the sixteenth power over 12 to the fourth power.
marishachu [46]
The answer is 8916100448256
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3 years ago
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