# Posts by Melanii

Total # Posts: 33

**Math**

sorry my computer messed up. my name is not "Anonymous"

*February 17, 2009*

**Algebra 1**

the sum of eric's and bob's weights is 9 times greater than the difference of their weights. the positive difference of their weights is also 240 lbs less than the sum. if eric weighs less than bob, find bob's weight. i can't find an equation for this. any help...

*February 17, 2009*

**Algebra 1**

i got (rounded) 1.4 and 1.4

*February 17, 2009*

**Algebra 1**

ok for "r" i got 1.388888888888888(cont.)

*February 17, 2009*

**Algebra 1**

5 green balls and 2 red balls together weigh 10 pounds, and 1 green ball and 4 red balls together weigh 7 pounds. If all red balls weigh the same amount and all green balls weigh the same, then what is the weight of 8 red and 8 green balls together? I'm not sure at all how...

*February 17, 2009*

**math**

i just did too. :)

*February 17, 2009*

**math**

sorry 5.4.3?

*February 17, 2009*

**math**

hi rachelle did you get number 5.3.4 yet?

*February 17, 2009*

**math**

good luck to you too, and no problem :)

*February 17, 2009*

**math**

lol i just came on here because 1. i needed help w/ homework 2. my friend and i can work together here my home work is really annoying tonite. if you look under many of the algebra or algebra 1 topics by me or Rachelle you'll see why i'm here. :):):)

*February 17, 2009*

**math**

no, actually i'm in seventh grade. i'm taking algebra 1. :)

*February 17, 2009*

**math**

both are right. the line does have infinite solutions, so either way works. it really depends on what you think works best or how your teacher teaches it.

*February 17, 2009*

**math**

yes!! to check, just plug in the numbers and see if they fit. :)

*February 17, 2009*

**Algebra**

yeah... i don't know about that equation though. i don't think 15 fits into it....

*February 17, 2009*

**Algebra**

maybe it's 6a=b? and they are 15 min apart?

*February 17, 2009*

**Algebra**

LOONDSI i tried this one. kinda. i don't think this is right but my equation was this: 6a+15=b -15 -15 6a=b-15 -b -b -15=6a-b -1(-15=6a-b) 15=(-6)a+b and then i guessed and checked... (-2,3) worked but that didn't help. now i'm stuck too. nooni

*February 17, 2009*

**Algebra 1**

yeah.........................

*February 17, 2009*

**Algebra 1**

erg i still don't really get it. oh well

*February 17, 2009*

**Algebra 1**

just reposting :):) i still don't really get it. "Tweedledum says: the sum of your weight and twice mine is 361 lbs. Tweedledee says: contrariwise, the sum of your weight and twice mine is 362 lbs if both are right how much do they weigh together?" i got this ...

*February 17, 2009*

**algebra**

i reposted it btw ok? :):):) just so you know.

*February 17, 2009*

**algebra**

thanks chopsticks. yeah that makes sense... i'm gonna try it.

*February 17, 2009*

**algebra**

i kinda did ratios 5:2 =10 4:1 =7 8:8 =? so then 2 1/2:1 =5 2:1/2 =3 1/2 4:4 =?

*February 17, 2009*

**Algebra**

hey!! rachelle (loondsiy) :):):)

*February 17, 2009*

**Social Studies**

if you look on google it will help you. mel :)

*February 17, 2009*

**science**

a flat sheet of paper has more area that the air pushes against, more mass, than a crumpled up paper.

*February 17, 2009*

**motion and projection**

do you mean that they can orbit forever? if so then no they can't.

*February 17, 2009*

**Math**

why did you repost?? look on your other one the answers are there

*February 17, 2009*

**Math**

thanks :)

*February 17, 2009*

**Math**

what i would do is divide 30 by 2, which is 15. then, since they are 8 apart, find 15-4 and 15+4. those are the two numbers they are 8 apart and =30. hope this helps, mel

*February 17, 2009*

**Algebra1**

no. i thought that is what their weights together were!!!??? :)

*February 17, 2009*

**Algebra1**

srry that was me above

*February 17, 2009*

**Algebra1**

"Tweedledum says: the sum of your weight and twice mine is 361 lbs. Tweedledee says: contrariwise, the sum of your weight and twice mine is 362 lbs if both are right how much do they weigh together?" i got this part, but the next part i can't figure out: "...

*February 17, 2009*

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