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3 years ago

What is the probability of getting either a sum of 6 or at least one 5 in the roll of a pair of dice

Mathematics

1 answer:

Gekata [30.6K]3 years ago

3 0

In percentage you mean?

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X²+y²-6x+14y-1=0 and please show your work so I can learn

Eva8 [605]

Hello there,

I hope you and your family are staying safe and healthy during this winter season.

$x^2 + y^2 -6x+14y-1=0$

We need to use the Quadratic Formula*

$x =\frac{-b+\sqrt{b^2}-4ac }{2a}$ , $\frac{-b-\sqrt{b^2} -4ac }{2a}$

Thus, given the problem:

$a = 1, b=-6, c=y^2+14y-1$

So now we just need to plug them in the Quadratic Formula*

$x=\frac{6+2\sqrt{(-6)^2-4(y^2+14y-1)} }{2}$ , $x=\frac{6-\sqrt{(-6)^2-4(y^2+14y-1)} }{2}$

As you can see, it is a mess right now. Therefore, we need to simplify it

$x=\frac{6+2\sqrt{10-y^2-14y} }{2}$ , $x = \frac{6-2\sqrt{10-y^2-14y} }{2}$

Now that's get us to the final solution:

$x=3+\sqrt{10-y^2-14y}$ , $x=3-\sqrt{10-y^2-14y}$

It is my pleasure to help students like you! If you have additional questions, please let me know.

Take care!

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2 years ago

How many lines of symmetry does the picture have? A. 3 B. 2 C. 1 D. 0

brilliants [131]

the answers is D cuz there is no line in the picture

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1 year ago

Realy need help if you help thank you so much

stepladder [879]

Answer:

Step-by-step explanation:

Rate, in this case, is mph which can be written as miles/hours.

HTH :)

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2 years ago

What is the probability of getting either a sum of 6 or at least one 5 in the roll of a pair of​ dice

What is the probability of getting either a sum of 6 or at least one 5 in the roll of a pair of dice