Namiyoshi Posted September 25, 2009 Share Posted September 25, 2009 sorry if this doesn't belong here, haven't been on in a while, i need help on a math prob. ( i should know how to do it) thanks (edit - i just noticed this is my 666th post :shock: :twisted: ) ---------------------------------------------------- (use the system of linear equations) A family bought 100 acres of land and paid 10,000 pieces of gold. The price of good land is 300 pieces of gold per acre and the price of bad land is 500 pieces of gold for 7 acres. How many acres of good land and how many acres of bad land were puchased? Deviantart- http://aishashaesha.deviantart.com/ Link to comment Share on other sites More sharing options...
Ego Eram Reputo Posted September 25, 2009 Share Posted September 25, 2009 I'm not going to solve this for you (it's homework after all), but I'm going to give you some help. You're dealing with simultaneous equations. The two equations are: X {acres of good land} + Y {acres of bad land} = 100 (1) X * $300 + Y * $500/7 = $10 000 (2) Express one variable in terms of the other: X = 100 - Y (reworked 1) Substitute the value into (2) (100-Y) * 300 + Y * 500/7 = 10000 (3) Now that you have a single term, solve the equation.... Good luck! ebook: Mastering Paint.NET | resources: Plugin Index | Stereogram Tut | proud supporter of Codelab plugins: EER's Plugin Pack | Planetoid | StickMan | WhichSymbol+ | Dr Scott's Markup Renderer | CSV Filetype | dwarf horde plugins: Plugin Browser | ShapeMaker Link to comment Share on other sites More sharing options...
Rick Brewster Posted September 25, 2009 Share Posted September 25, 2009 http://tinyurl.com/cq8qwe http://wolfram.com/products/mathematica/index.html The Paint.NET Blog: https://blog.getpaint.net/ Donations are always appreciated! https://www.getpaint.net/donate.html Link to comment Share on other sites More sharing options...
Frontcannon Posted September 25, 2009 Share Posted September 25, 2009 Your thread was answered by a moderator AND the Paint.NET lead developer. In a row. Congratulations. Night Vision Text Effect Tutorial Gallery reddit.com/r/futurebeats | My Mixcloud Link to comment Share on other sites More sharing options...
epic epiphany Posted September 25, 2009 Share Posted September 25, 2009 Your thread was answered by a moderator AND the Paint.NET lead developer. In a row. Congratulations. XD Does that ever happen? Previously dgirl555, but now you can call me epic Oh, and I really like airbrushing photos Link to comment Share on other sites More sharing options...
Kemaru Posted September 25, 2009 Share Posted September 25, 2009 I have a question. Dunno if it's "amateur" though. (metric system for the win, sorry :--D) An ice cream cone's base diameter is 65mm and it's height is 150mm. How many decilitres of ice cream is in this cone? I just want to check if I got it right or wrong. Hidden Content: [reason]Answer I got:[/reason] around 0,053 dl Hatred does not cease by hatred, but only by love; this is the eternal rule. |fb(page)|portfolio|blog| Link to comment Share on other sites More sharing options...
Crimson Posted September 25, 2009 Share Posted September 25, 2009 I have a question. Dunno if it's "amateur" though. (metric system for the win, sorry :--D)An ice cream cone's base diameter is 65mm and it's height is 150mm. How many decilitres of ice cream is in this cone? I just want to check if I got it right or wrong. Hidden Content: [reason]Answer I got:[/reason] around 0,053 dl What kind of ice cream cone only has ice cream up to the brim of the cone? You have to account for the scoop on top too. Create A Professional-Looking Product Advertisment Mockup flickr | Deviant Art Link to comment Share on other sites More sharing options...
Ego Eram Reputo Posted September 26, 2009 Share Posted September 26, 2009 An ice cream cone's base diameter is 65mm and it's height is 150mm. How many decilitres of ice cream is in this cone? Volume of a cone = 1/3(area of base) x height Area of the base (a circle) = pi x radius squared So volume = 1/3(pi x R^2) x Height = (pi x 32.5^2)/3 x 150 = 165915.362 cubic millimetres You figure the conversion to decilitres! Real answer: None - if that's my ice cream cone Hint to original questions solution: Hidden Content: y is somewhere in between 85 and 90, thus x must be somewhere in between 10 and 15 :wink: ebook: Mastering Paint.NET | resources: Plugin Index | Stereogram Tut | proud supporter of Codelab plugins: EER's Plugin Pack | Planetoid | StickMan | WhichSymbol+ | Dr Scott's Markup Renderer | CSV Filetype | dwarf horde plugins: Plugin Browser | ShapeMaker Link to comment Share on other sites More sharing options...
Rick Brewster Posted September 27, 2009 Share Posted September 27, 2009 In any case, this is NOT a homework help forum. Thread Closed The Paint.NET Blog: https://blog.getpaint.net/ Donations are always appreciated! https://www.getpaint.net/donate.html Link to comment Share on other sites More sharing options...
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