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by theshadow
Thu Aug 27, 2015 6:42 pm
Forum: Beginning Algebra
Topic: Need help to reduce this equation: x = (a+(0.1725*x)+(0.2*x)) - (0.2*a)
Replies: 1
Views: 36

Re: Need help to reduce this equation: x = (a+(0.1725*x)+(0.2*x)) - (0.2*a)

I need to reduced the following so that I can determine the value of 'x' x = (a+(0.1725*x)+(0.2*x)) - (0.2*a) Not sure what you mean by 'reduced'. Just times it out, simplify, and solve. (a+(0.1725*x)+(0.2*x)) - (0.2*a) a+0.1725x + 0.2x - 0.2a 1a - 0.2a + 0.1725x + 0.2x (1 - 0.2)a + (0.1725 + 0.2)x...
by theshadow
Tue Aug 18, 2015 1:44 am
Forum: Intermediate Algebra
Topic: Roots of exponential expressions
Replies: 3
Views: 85

Re: Roots of exponential expressions

I would like to have a bit more specific details on what makes a problem like this \sqrt{b^1^8}=\left| b^9 \right| From your second post it looks like you mean this: \sqrt{b^{18}\,}\, =\, \left|\, b^9\, \right| End up with an absolute value. I am having trouble comprehending what determines the ans...
by theshadow
Tue Aug 18, 2015 1:42 am
Forum: Discrete Math
Topic: How many combinations
Replies: 3
Views: 85

Re: How many combinations

I'm trying to research a lottery game. The game goes like this. Select 12 numbers from 1-24. Get all 12 correct, win grand prize. Get none correct win grand prize. I've found a trend where the game will draw a certain combination of numbers every few games. It will draw 2 numbers from 1-4, 2 number...
by theshadow
Wed Aug 12, 2015 3:55 pm
Forum: Beginning Algebra
Topic: Rearranging Formulae
Replies: 5
Views: 167

Re: Rearranging Formulae

This is our attempt.... R=(u+v^2)/(u+v) R(u+v)=(u+v^2) times both sides by (u+v) Ru+Rv=u+v^2 multiply out LHS Ru+Rv-u=v^2 start collecting terms on LHS bu doing a -u Ru-u=v^2-Rv then a -Rv u(R-1)=v^2-Rv Factorise LHS <== u=v^2-Rv/R-1 divide by (R-1) Your meth...
by theshadow
Thu Aug 06, 2015 8:53 pm
Forum: Uncategorized
Topic: making cubes
Replies: 7
Views: 217

Re: making cubes

A proper proof is more than I'd care to get into, but page 13 of this PDF confirms your result of 333.
by theshadow
Sat Aug 01, 2015 1:50 pm
Forum: Beginning Algebra
Topic: Radical answer confirmation
Replies: 8
Views: 158

Re: Confirm answers when simplifying expressions

What are some methods to check your simplifying algebraic expressions to make sure u have done it correctly. I know how to check equations. What about expressions? What the other poster is right. You can try your calculator if you're doing numbers. Otherwise it's just practice that lets you know wh...
by theshadow
Tue Jul 14, 2015 10:27 pm
Forum: Trigonometry
Topic: Trigonometry- finding these lengths
Replies: 1
Views: 219

Re: Trigonometry- finding these lengths

I need help finding the lengths given in this diagram. http://i288.photobucket.com/albums/ll164/alexandraessie900/image.jpg1_zpsaztswvkn.jpg If I was doing this I'd start by trying to find a triangle that I can solve. The one on top gives one side plus the angles on either end of that side for ASA....
by theshadow
Tue Jul 14, 2015 10:22 pm
Forum: Intermediate Algebra
Topic: Urgent problem, (simple?) linear programming,
Replies: 4
Views: 214

Re: Urgent problem, (simple?) linear programming,

Potentin wrote:...excel solver don't accept my approach =/

I don't know anything about using Excel's "solver" for this. Maybe this PDF can help.
by theshadow
Sun Jul 12, 2015 2:24 am
Forum: Trigonometry
Topic: Reciprocal trigonometric ratios
Replies: 5
Views: 89

Re: Reciprocal trigonometric ratios

Determine the value of theta(idk how to type the symbol) to the nearest degree 1.) cot(theta)=3.2404 2.)csc(theta)=1.2711 3.)sec(theta)=1.4526 4.)cot(theta)=0.5814 You can do like they show here : convert to the inverse-ratio form and plug it into your calculator. If you're stuck, please write back...
by theshadow
Thu May 28, 2015 2:24 am
Forum: Discrete Math
Topic: How to negate a conditional statement?
Replies: 2
Views: 193

Re: How to negate a conditional statement?

If Fido barks, then Fido is a tree. let p = Fido barks Let q = Fido is a tree. symbolic form p ---> q My attempt "Your attempt" at what? Is the actual question in the subject line so you're needing to negate the if-then? p --> q is ~p V q This is equal so it's not a negation. To negate, p...

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