- Mon Oct 05, 2015 6:48 pm
- Forum: Intermediate Algebra
- Topic: Linear Programming shortest path
- Replies:
**3** - Views:
**34**

I'm kind of stuck with my a Linear programming taks.... Its about a guy trying to get into as many pubs as possible within 9 hours. There are 14 pubs located on a manhatten map (e.g. Pub 1 has to coordinates 4,9 and so on). The guy is moving at the speed of 1 lag (e.g. from 0,1 to 1,1) in 10 minute...

- Mon Oct 05, 2015 5:05 pm
- Forum: Calculus
- Topic: Help with implicit derivative problem...
- Replies:
**1** - Views:
**24**

So I've actually gotten pretty far but I'm stumped here: \frac{3}{2}\frac{y-x\frac{3x}{2y}}{y^2}=\frac{3(2y^2-3x^2)}{2^2y^3} I guess I'm getting stumped by the algebra here. How did they go from the left side of the fraction to the right side? What were your results, upon attempting to simp...

- Thu Sep 17, 2015 9:08 pm
- Forum: Arithmetic
- Topic: sales price to charge after deducting commission to achieve cost value
- Replies:
**1** - Views:
**131**

I have costs of £332.84 - i want to work out what the sale price should be to cover the costs exactly assuming that I have to deduct 15% from the sale price What does the exercise mean when it says that the sales price is to cover the "costs" "exactly" and yet also that fifteen ...

- Mon Aug 24, 2015 11:09 pm
- Forum: Trigonometry
- Topic: convert angle to position -geometrci algebra-??
- Replies:
**2** - Views:
**185**

is it possible to convert angle to position ?? Unless there is additional information, I don't see how knowing the measure of some angle would provide the position of some item in space. i try to animate manually my character's bone where i drag the end effector bone ("hand") by the mouse...

- Mon Jul 27, 2015 10:50 pm
- Forum: Statistics
- Topic: number sequences help
- Replies:
**7** - Views:
**344**

I have some sort of formula,but I dont really understand it. Here it is : http://postimg.org/image/jy5jyli83/ . How did you develop this page of formulae? What is the mathematical significance of the semi-colons? What are the definitions of "n", "r", "el", "sk&quo...

- Mon Jul 27, 2015 8:03 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Proof that time goes faster the older you get - Help?
- Replies:
**2** - Views:
**334**

Define x as the speed of time when you are middle-aged; say, for instance, when you are 50. Define y as the speed of time when you are a child; say, for instance, when you are 5. Define "a" as having the value of 5. Then: x = 50 = 10*5 = 10a y = 5 = 1*5 = 1a = a Thus y = 10x, "provin...

- Wed Jul 01, 2015 12:07 am
- Forum: Discrete Math
- Topic: solve this difficult number sequence
- Replies:
**3** - Views:
**558**

There does appear to be another instance of this question, proposed at nearly the same point in time five years past. The second instance ( here ) may be a repost of the poker-forum original which, as noted in the previous reply, may have contained an error -- and indeed may have have been a jape. T...

- Tue Jun 16, 2015 5:51 pm
- Forum: Discrete Math
- Topic: i need this to be proved really QUICK!
- Replies:
**1** - Views:
**298**

Prove that every tree graph has at least two vertexes with degree of one. There are many discussions of this exercise. You may find some of the following to be helpful: ⋅ StackExchange: Tree has at least two vertices of degree 1 ⋅ Homework Solutions (see Exercise 1) ⋅&nbs...

- Fri Jun 12, 2015 7:39 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: problem how to find solutions to hyperbola equation
- Replies:
**1** - Views:
**253**

A problem I have asks for the equations for the asymptotes of a hyperbola with this equation: [(x-3)^2/81] - [(y+7)^2/49] = 1 The answer given is: (-18, -7); (0,-7) I don't understand this You are quite correct that these points cannot possibly be the required equations of asymptotes. In fact, thes...

- Wed May 20, 2015 12:39 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Finding an nth degree polynomial
- Replies:
**1** - Views:
**327**

Suppose the division of f(x) by x-5 gives a quotient Q(x) and remainder R of 23. (b) Suppose Q(9) = 4; find f(9) One may "plug in" to what has already been determined by the conditions of the exercise. The exercise provides that: . . . f(x)\, =\, q(x)(x\, -\, 5)\, ...