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by theshadow
Thu May 28, 2015 2:24 am
Forum: Discrete Math
Topic: How to negate a conditional statement?
Replies: 2
Views: 114

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...
by theshadow
Wed May 27, 2015 12:54 pm
Forum: Beginning Algebra
Topic: Surveying mathematics: Vectors and Areas
Replies: 3
Views: 143

Re: Surveying mathematics: Vectors and Areas

This is a Geocaching puzzle cache. Link: http://coord.info/GC48V2V I have been through it a couple of times and still can't quite get everything correct. Can someone please work through it for me so I can find out where I have gone wrong. I don't know if anybody here knows anything about surveying....
by theshadow
Wed May 27, 2015 12:52 pm
Forum: Intermediate Algebra
Topic: step by step instructions solve using a system of Lanier equations
Replies: 1
Views: 164

Re: step by step instructions solve using a system of Lanier equations

Solve using a system of Lanier equations. What are "Lanier equations"? I've never heard of them & can't find anything online about them. A mom purchased 28 packages of Reese's cups for a total of 88 Reese's cups. A king package holds 4 cups, and a regular package holds 2 cups. How man...
by theshadow
Fri May 15, 2015 10:50 pm
Forum: Arithmetic
Topic: Speed/Distance/Time + Fuel Consumption
Replies: 2
Views: 358

Re: Speed/Distance/Time + Fuel Consumption

So, obviously we've got our formulas: Distance = Speed / Time No: distance equals rate ("speed") TIMES time (not divided by). You can learn more here . I'm wondering if anyone knows the quickest most efficient way to solving questions such as: What speed covers 18 miles in 54 minutes Plug...
by theshadow
Thu May 07, 2015 9:24 pm
Forum: Geometry
Topic: Circle with 4 tangent circles
Replies: 6
Views: 6856

Re: Circle with 4 tangent circles

I saw the image and wondered if I could do it without math, meaning without calculating the length of the radius for example. I don't know if you'd have to "calculate" but you'd probably have to do something measurable (even if it's just "duplicating" lengths with the compass, e...
by theshadow
Thu Mar 12, 2015 7:33 pm
Forum: Geometry
Topic: Point Slope form without slope
Replies: 2
Views: 5361

Re: Point Slope form without slope

Have learned about point slope form. It is one of the form to find the equation of the straight line with formula y-y1=m(x-x1). But how to find the equation without slope using point slope form? What do you mean by "finding the equation without slope"? Because the line equation kind of ha...
by theshadow
Thu Mar 12, 2015 7:31 pm
Forum: Intermediate Algebra
Topic: Counting using Permutations and Combinations
Replies: 1
Views: 408

Re: Counting using Permutations and Combinations

1. Using the letters from the word equation , how many 5-letter patterns can be formed in which q is followed immediately by u? The q and u are together as one unit, so you have the "letters" a, e, i, n, o, qu, and t, with no repetitions. This is 7 units and you have to pick 5. So do 7-ch...
by theshadow
Mon Mar 09, 2015 2:56 pm
Forum: Intermediate Algebra
Topic: Linear programming problem
Replies: 1
Views: 352

Re: Linear programming problem

Hi, I am going to use excel to try to solve this problem and I can't figure out how to do this: Do you have to do it in Excel? Are you not allowed to do it the regular algebra way? Company builds 2 models of computers (A and B) There are 800 hours of labor available Labor required for each A comput...
by theshadow
Tue Jan 27, 2015 10:43 pm
Forum: Trigonometry
Topic: Angle of an Isosceles triangle for any opposite side length.
Replies: 2
Views: 572

Re: Angle of an Isosceles triangle for any opposite side len

ABC is a triangle. Opposite the vertices A, B, and C are the sides a, b, and c, respectively. (thanks for the syntax help). This is an Isosceles triangle since a and b are the same length. What formula can I use to determine the angle C for a given c. I am trying to write a function that will retur...
by theshadow
Fri Jan 16, 2015 3:34 am
Forum: Intermediate Algebra
Topic: reverse formula
Replies: 4
Views: 916

Re: reverse formula

Dear Forum members , Can someone help me to turn this formula so I can calculate ta . thank you in advance, Mon. P = P50 [ (ti - tr) / ln( (ti - ta) / (tr - ta) ) 1 / 49.32 ]n (1) ta = ........ I don't know what you mean by "turning" the "formula" to calculate "ta". Ma...

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