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Mathematics 8 Online
OpenStudy (anonymous):

Please help me

OpenStudy (anonymous):

OpenStudy (anonymous):

If you want help--I can help you (I worked out the problem last night...).

OpenStudy (anonymous):

As long as you treat me with respect.

OpenStudy (anonymous):

Of course.

OpenStudy (anonymous):

And only if you admit that I'm your only hope.

OpenStudy (anonymous):

Just kidding.... You don't have to say that!

OpenStudy (anonymous):

._.

OpenStudy (anonymous):

Okay, so one of the constraints is (30,40). Right?

OpenStudy (anonymous):

I mean vertices.

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

@piglet9

OpenStudy (anonymous):

First, there's something I totally missed at first.

OpenStudy (anonymous):

do you have a better picture of this problem?

OpenStudy (anonymous):

no..

OpenStudy (anonymous):

You'll still have to draw a picture but check it out: The problem's even easier than it looks because spruce trees: a.) are cheaper b.) take up less land c.) take care of more CO2 So really, you would just want to buy all spruce and no maple...

OpenStudy (anonymous):

well, they want to plant both kinds of trees. That is what the problem says.

OpenStudy (anonymous):

No, you can CHOOSE either type of tree but their objective is to "maximize carbon dioxide absorption"

OpenStudy (anonymous):

Wait, piglet has the spruce trees costing $60 (they should only cost $30)

OpenStudy (anonymous):

ok I got the wrong solution lol

OpenStudy (anonymous):

30x+40y <=2100 600x+900y<=4500

OpenStudy (anonymous):

doh! i forgot a 0 on that 4500

OpenStudy (anonymous):

grrr

OpenStudy (anonymous):

That was a nice graph, though. I don't know how to add graphs to my answers...

OpenStudy (anonymous):

you go to draw to add a graph

OpenStudy (anonymous):

Oh, I didn't know that did straight lines... (Actually, I kind of hate it when people try to write words with the "Draw" but that's just me...)

OpenStudy (anonymous):

what next?

OpenStudy (anonymous):

Ok, you know how when you graph inequalities and you shade one side of the line?

OpenStudy (anonymous):

this is all i have so far 30x+40y <=2100 600x+900y<=4500

OpenStudy (anonymous):

The FEASIBLE REGION is sort of just like that--you shade the part under both constraints but only the part in quadrant 1 that's underneath both constraints.

OpenStudy (anonymous):

what do I do after the part I have down? how do I graph that?

OpenStudy (anonymous):

ok lets start over... 30s + 40m <= 2100 600s +900m <= 45000 simplified to graph: m<= -3/4s +52.5 m<= -2/3s +50 and my semi-bad handwritten graph:

OpenStudy (anonymous):

How do you change colors in the "draw" part?

OpenStudy (anonymous):

I don't think you can change colours

OpenStudy (anonymous):

|dw:1383010986504:dw|

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