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Type: Posts; User: galactus
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Use the formula. It's just 'plug and chug'.
n=p(1-p)\left(\frac{z}{E}\right)^{2}
If p is unknown, assume p=0.5
In this case, E=.015, \;\ z=1.645, \;\ p=.5
Round up to the nearest whole...
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Hi Unknown. Long time. :)
Linear programming does not require calculus.
If one graphs the lines generated from the inequalities, one looks at the vertices of their intersections.
Basic...
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You have a typo in your problem.
What is 5x-2y 1/2z?
+? -?
Are you sure that is not z=x^{2}+e^{y}?
Please make sure the problem is typed exactly as presented.
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This is a system of two equations with two unknowns.
Let m=number of memo pads and let p=number of pens.
They must make $8400:
8m+5p=8400
They want to sell 120 items:
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This is one solution that works, though it is rather abstract. These are the first 5 Euler Phi numbers of the first 5 composite numbers.
The Euler Phi function or Totient function, \phi(n), is...
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You are correct. It is indeed 0.
It is not an indeterminate form. It is also continuous.
Thus, you can do that.
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Do a search. Here is a site that may help:
Behind the Magic Square Maker
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Look at the sum closely. N is a constant.
Say we have n=10.
All terms are 0 up to (10-1)C(10,10)=9
Regardless the value of n, this is true throughout.
So, the sum is n-1.
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1+\frac{cos\theta}{2}-cos\theta is what you have written.
And to do what exactly?
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Jjuiibn;j h hmnk mxvnncvuygaefnbamn
I checked Google and this "problem" has been posted on a dozen different sites. No one else appears to know what it means either.
Especially, the 3363.
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Same concept as with a circle.
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This is known as a derangement.
The probability that no letter ends up in its envelope is
\sum_{k=0}^{N}\frac{(-1)^{k}}{k!}
This is the series for 1/e. So, for large N, the probability...
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There is 12.5 grams out of 50 grams remaining after 14.5 days.
12.5=50e^{k(14.5)}
Solve for k.
Half life is given by:
T=\frac{-ln(2)}{k}
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Since the numbers are consecutive, they can be written as
x-1, \;\ x, \;\ x+1
The square of the middle number is x^{2}
The difference of the squares of the other two:
(x+1)^{2}-(x-1)^{2}
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The margin of error is E=z\cdot \frac{\sigma}{\sqrt{n}}
.95 CI corresponds to a z score of 1.96
So, we have E=1.96\cdot \frac{4}{\sqrt{30}}=1.43
The CI is then:
...
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Implicitly differentiate
3x^{2}-y^{2}+xy=4
to get y'.
Set the result = to 8/3 and solve for y.
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Go here and download the very nice and FREE graphing utility. Then, graph it.
Graph
It looks like an infinity symbol.
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Some explanation from the OP would be nice. But, I assuming those brackets indicate the floor function.
If so, then the first one would be x=0,1,4
I wonder why so many think that those on...
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\frac{5x^{-2}y^{140}}{256x^{-1}(-3x^{-34}y^{-1})^{-67}}
This is not an equation, it is an expression.
Equations have equals signs.
What is it you need to do? Simplify?
First, write with...
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Do you mean 2^{x+2}=4^{-x}?
You have 2^{x}+2=4^{-x} written.
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See here as well.
https://www.askmehelpdesk.com/math-sciences/how-do-you-find-f-f-g-x-if-f-x-2x-5-g-x-square-root-x-568637.html
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I will try to decipher.
Replace f(x) with y:
y=k(2+x)
swap x and y:
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A=(0,-1,-1), \;\ B=(4,5,L), \;\ C=(3,9,4), \;\ D=(-4,4,4)
AB=-4i-6k+(-L-1)k
AC=-3i-10j-5k
AD=4i-5j-5k
Cross Product:
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Sweet. I would give you a greenie, but it won't let me.
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a. look up the z score corresponding to a .70 in the body of the table.
b. same as above only look up .20
c. z scores come from the left and go right. So, just look up .75 in the body of the...
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Go to a z table and look up .60 in the body of the table and find its corresponding z score.
Then, set it equal to the formula z=\frac{x-200}{50}, and solve for x.
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This post is 3 years old. And you have the nerve to give me a Not Helpful after posting that nonsense.
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I assume then that my interpretation was correct.
The solution is \frac{2010\pi}{2}=1005\pi
Try it with other powers of tan. You will see the solution comes out to half of the upper limit of...
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7log(10/9)-2log(25/24)+3log(81/80)
Use your log laws to break it up and simplify in terms of log(2), log(3), log (5). Everything with cancel except for one little ol' log(2).
For instance, to...
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Very good JC. I figured this problem had something to do with observation. This horrific integrals like this normally indicate this. I misread. Either way, good show. Now, let's see if the OP even...
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Is this what you mean:
\int_{0}^{2010\pi}\frac{1}{tan^{2011}(x)+1}dx
If so, may I ask from where you got this crazy integration problem?
I would venture to say that this is not meant to be...
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An easy way to find your constant of proportionately is to use the formula for half-life:
T=\frac{-ln(2)}{k}
You are given the half-life decay time. Plug it in and solve for k.
Then, you can...
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Look at the factorization for the sum of two cubes.
Factor:
a^{3}+b^{3}
Let a=sin^{2}(x), \;\ b=cos^{2}(x)
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I'm sorry, what do you mean "a developer doing some testing"?
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What you posted is the area of a circle.
{\pi} is the ratio of a circles diameter to its circumference.
In other words. The distance around a circle is Pi, or about 3.14, times the distance...
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Part a is obvious.
Part b is the same as asking if a non-leap year starts on a Sunday. There are 7 days in a week. Wouldn't it be 1/7?
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Kudoes, JCaron. I couldn't agree more.
I tried giving you a rep, but it will not let me. Some silliness about "spreading it around". I don't know how to take that:)
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Assuming the keys are identical and the boxes are different.
If we are distributing r identical objects into n different boxes, then there are
C(r+n-1,r) ways
In this case, C(5+3-1,5)=21...
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If repetition is allowed, then there are
6^{3}=216 numbers that can be formed.
If repetition is not allowed, then there are
6\cdot 5\cdot 4=120 numbers that can be formed.
When forming 3...
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Assuming they are well-defined, the inverse would be
g^{-1}of^{-1}
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Here is what you have written:
x^{2}+7x+\frac{12}{x^{3}}+4x^{2}-x-4
I assume you mean:
\frac{x^{2}+7x+12}{x^{3}+4x^{2}-x-4}
This is why grouping symbols are important.
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But, if you want to do this algebraically, let''s do this:
Take log of both sides:
log(x^{log(x)-1})=2
(log(x)-1)log(x)=2
(log(x))^{2}-log(x)-2=0
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Yep. That's them. Good :)
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Is this what you mean?:
x^{log(x)-1}=100
If so, look close. There are two solutions.One is rather obvious.
What is log(100)? Isn't it equal to 2?
So,...
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I assume y is the number of kg produced or sold.
Thus, R=160y
Remember, P=R-C
Profit=Revenue-Cost
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When a tie happens at least one basic variable will be zero in
the next iteration and the new solution is called 'degenerate'.
Say we wanted to maximize z=3x_{1}+9x_{2}
s.t. ...
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Exponent? What exponent? Solve what?
Rewrite 5 and 3/4 as a decimal? 5.75
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No one is that stupid, so it makes me believe this is just a troll with nothing better to do.
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I assume this is what you're describing?:
The section 1/8th inch on either side of the x-axis must be the same as the segment with height h?
Assuming I am interpreting correctly, find the...
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log_{8}(1)=x
To write it another way:
8^{x}=1
What must x be?
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