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rjkz [21]
2 years ago
9

A bag contains 3 red marbles, 2 blue marbles and 4 green marbles. If two marbles are drawn out of the bag, what is the probabili

ty, to the nearest 10th of a percent, that both marbles drawn will be red?
Mathematics
1 answer:
Basile [38]2 years ago
3 0

Answer:

9

Step-by-step explanation:

Well we

do 3 + 4 + 2

= 9

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4 0
3 years ago
I don’t know how to solve this problem
miss Akunina [59]

The draws are independent, so

P(\text{red then blue})=P(\text{red})\cdot P(\text{blue})

There is a total of 11 marbles in the bag, so

P(\text{red})=\dfrac3{11}

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7 0
3 years ago
Explain how you could write a quadratic function in factored form that would have a vertex with an x-coordinate of 3 and two dis
skad [1K]
<span>The definition of quadratic function is given by:

</span>(1) \ f(x)=ax^{2}+bx+c \\ \\ where \ a, b, c \ are \ real \ values<span>

So the problem asks for two conditions:

<em>1. Write the quadratic function in factored form. </em>
<em>2. The vertex has an x-coordinate of 3.</em>

Then the equation (1) must be written as follows:

</span>f(x)=(x-m)(x-n) \\ \\ where \ m \ and \ n \ are \ the \ roots<span>

To satisfy the two conditions:

\frac{m+n}{2}=3

So we are free to choose the value of one root, say:

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Thus:

n=6-1=5

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The graph of this function is shown in the figure below.</span>

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