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Minimization prob.jpg

MelodyOct 7, 2013

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if cscθ = x+6/x-2 and ctnθ = x+5/x-2 find θ

Hi Diaanaa,

I am having problems with your question.
Before I try further I just want to make sure that you meant

If Cosec(theta) = x + (6/x) - 2
and cotangent(theta) = x + (5/x) - 2
find theta

(We dont use the shortened versions csc and ctn in Australia, we use cosec and cot)

Please let me know if my interpretation of the question is correct.

MelodyOct 7, 2013

+118725

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Probabilities must be between 0 and 1 inclusive
If something cannot happen, the probability is 0
If something has to happen the probability is 1
So you probability of 3 doesn't make any sense.

Maybe you meant P(black or gold) = 3/7
There are 9 marbles that are either black or gold
Let there be x white marbles.
So the number of marbles altogether is 3+6+2+6+x = 17+x

so 9/(17+x) = 3/7
Now just solve it as a little equation to get the value of x.

MelodyOct 7, 2013

+118725

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no it doesn't have to be
example

root12 and root3 are both irrational but

root12/root3 = 2

MelodyOct 7, 2013

Oct 6, 2013

+118725

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Divide both sides by 2
Subtract 6x from both sides
Divide both sides by the number in front of the x (the x coefficient)
the answer will be negative.

MelodyOct 6, 2013

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The number of ways 5 numbers can be selected from 54 is
54C5 = 54!/(5!*49!) = 3162510

The number of ways you can select 4 things from 5 is 5C4 = 5

So the probability of being a small fry winner is 5/3162510

The probability of being any winner is 6/3162510

MelodyOct 6, 2013

+118725

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This is an irrational number unless your base is some power of 5 so the the best exact answer is
0.34log5

Ans yes, if you want an estimate and it is base 10 or base e do it on your calculator.

MelodyOct 6, 2013

+118725

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Sorry, your question does not make sense.

MelodyOct 6, 2013

+118725

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Apple and plum jam.

MelodyOct 6, 2013

+118725

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I think more information is needed scrutinizer.
I had a quick look and I couldn't find any of the constants.
Sorry Ruthe

MelodyOct 6, 2013

+259

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Solve this equation and use then the formula (x - x1)(x - x2)(x - x3) = 0

scrutinizerOct 6, 2013

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What is the probability of being a Small-Fry Winner?

What is the probability that you are either a Big Winner or a Small-Fry Winner?

GuestOct 6, 2013

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what is the question?

GuestOct 6, 2013

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You can use the following method:
log(a) / log(b) = logarithm of a to base b

For example:
log(16) / log(2) = logarithm of number 16 to base 2 = 4

GuestOct 6, 2013

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usmnt:
The Sorry State Lottery requires you to select five different numbers from 0 through 54. (Order is not important.) You are a Big Winner if the five numbers you select agree with those in the drawing, and you are a Small-Fry Winner if four of your five numbers agree with those in the drawing. (Enter your answers as exact answers.)

Its a combination btw

GuestOct 6, 2013

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http://web2.0calc.com/

Use a caculator.

GuestOct 6, 2013

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8 1/3 = 25/3 and the area of a triangle is (base x height) / 2 = (25/3 * 4) /2 = 50/3 = 16 2/3

P.S. this is exactly the half of a rectangle. the formula comes from there as well. fold the rectangle and have a triangle

GuestOct 6, 2013

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[input]expand( (3*m^3*n^-2)^3 )[/input]

adminOct 6, 2013

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He traducido tu pregunta pero todavía no entiendo lo que está pidiendo.

GuestOct 6, 2013

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4 1/10*3 5\6=41/10 * 23/6=943/60=15 43/60

GuestOct 6, 2013

+118725

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Well, there are 6 identical faces so you should be able to find the area of one side. 294/6= 49cm ²
Since you know the area of the square you should be able to work out the side length.
Once you have the length of the side you can work out the volume.

If I haven't given you enough help just post another reply and I will try to help more.

MelodyOct 6, 2013

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what does N and m stand for?
Is there more to this question?

MelodyOct 6, 2013

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Atoms per pencil.jpg

I think this method is used quite often by chemistry teachers but, for some reason that I cannot explain, I have never seen another maths teacher use this technique.

I think it is great I hope you can work out what I am talking about.

MelodyOct 6, 2013

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the area of a square is x squared plus 10 x plus 25 how tall the side of this square.

I've translated your question but I still don't understand what you are asking.

MelodyOct 6, 2013

+118725

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You don't seriously expect someone to go find the questions for themselves do you?

Besides, the site is password protected.

MelodyOct 6, 2013

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