Algebra bi-weekly problem help?
Every other week, my class has a problem of the week we must solve. I am fine at solving the problems, but we must explain our work on at least half a sheet of wide-ruled paper.
Can basil please help me explain this?
There are three shapes, a cube, cylinder, and a sphere. Let c stand for cylinders, x for cubes, and s for spheres.
How many pounds does a cube weigh?
c+c+x = 17
s+s+x = 23
s+c = 13
oh goddammit i messed up S+X /=/ 13 S+C = 13
Right now, I have figured out that x(cube)=7,
c(cylinder)=5,
and s(sphere)=8.
How can I explain this verbally (with a formula possibly) on half a sheet of paper?
Thank you in advance, and this is algebra one.
October 1, 2010
4 Comments • Newest first
[quote=tangentline]Okay, nvm its a system of three equations. Subtract the middle one into the top one. 2c-2s=6
Now add 2c+2s=26 to get 4c=32
c=8
13-8=5 so the sphere = 5
5+5+x=23
x=13, the cube.[/quote]
thanks for all your help, i know what you did, but it isnt a series.
those are there to attempt to help people find the numbers, which i already found. i just need to explain how i got a formula to solve them, which i didnt. the problems dont correspond to each other in any form whatsoever
Any other help, please?
I tried some of your advice, and I got a little done... :[
Err... You can try going backwards, and work your way to the problem? : D.
[quote=FieryStaff]
c+c+x = 17
s+s+x = 23
s+x = 13
x(cube)=7,
c(cylinder)=[b]5[/b],
and s(sphere)=[b]8[/b].
[/quote]
Are you sure about those two?
To answer your question, just write out the steps you take to solve the problem.