This Blog exists for the collective benefit of all algebra students. While the posts are specific to Mr. Chamberlain's class, any and all "algebra-ticians" are welcome. The more specific your question (including your own attempts to answer it) the better.
if anybody had trouble with 39 here it is: V=1/3(pi)r^2h first step: multiply both sides by 3: 3v=(pi)r^2h; instead of isolating h in mutliple steps you might as well multiply both sides by (pi)r^2 to isolate h; h=3v/(pi)r^2
#36 was a tricky one, Tyler was right once again! The tough part was factoring out the x from nx + x... factoring is the art of using the distributive property in reverse!
For more explanation, see example problem 2 on page 110
I consolidated all of your questions from the previous blog post below:
ReplyDeleteAnonymous said...
i had a question for number 21... rx + sx over t = 1.... what should i do
October 12, 2010 4:28 PM
Anonymous said...
Me TOOO im having problems with numbers 23-29 and 29, 32
October 12, 2010 4:37 PM
Anonymous said...
I agree with anonymous.. I need help with (rx+sx)/t=1
Help..
Tyler we need your help nowwwww..
October 12, 2010 5:04 PM
Anonymous said...
Oh and 24 & 27.. So confusing.. TOO MANY VARIABLES D;
October 12, 2010 5:06 PM
Anonymous said...
this is so confusing i don't understand #33..
how do I make an equation for that?
October 12, 2010 5:13 PM
Anonymous said...
I don't understand #36.. How am I supposed to simplify 2m-nx-4=x???
October 12, 2010 5:21 PM
Anonymous said...
Oh god I just need help with all of them :(
October 12, 2010 5:25 PM
I going out for awhile, so if someone else can answer questions tonight, that would be great!
ReplyDeleteYES SOMEONE PLEASE ANSWER QUESTIONS! D:
ReplyDeletesorry i was at CCD. i no everybody wants me...for that prob i was confused too but if you have any other questipons...
ReplyDeleteHeres one way you can do it: 2m - nx = x + 4
ReplyDeleteAdd -x to both sides: 2m - x - nx = 4
Add -2m to both sides: -nx - x = 4 - 2m
Multiply both sides by -1: nx + x = 2m - 4
Factor x out of the left hand side: x(n + 1) = 2m -4
Divide both sides by n + 1: x = 2m - 4 over n + 1
if anybody had trouble with 39 here it is:
ReplyDeleteV=1/3(pi)r^2h
first step: multiply both sides by 3: 3v=(pi)r^2h; instead of isolating h in mutliple steps you might as well multiply both sides by (pi)r^2 to isolate h; h=3v/(pi)r^2
Tyler is right on #39, except that he should have said DIVIDE instead of MULTIPLY... his work was correct however...
ReplyDelete#33 is simply a proportion... (it helps to measure time in minutes)
ReplyDelete65 miles is to 60 minutes, as 25 miles is to x minutes
65/60 = 25/x
OR...
x/25 = 60/65... you can isolate x simply by multiplying both sides by 25, right?
#36 was a tricky one, Tyler was right once again! The tough part was factoring out the x from nx + x... factoring is the art of using the distributive property in reverse!
ReplyDeleteFor more explanation, see example problem 2 on page 110
#21 required the same technique, ca-peeesh??
ReplyDeleteHow do you set up #33 as an equation?
ReplyDeleteI see it as a proportion (which IS and equation) rather than the typical equation we have been working with... can you set it up as a proportion?
ReplyDeleteWhat about #42? I don't get it.
ReplyDeleteNevermind I got it you substitute 1260 for S and then distribute 180 and on.. :)
ReplyDeleteI LOVE when students answer their own questions!!
ReplyDeleteYAY!! :)
ReplyDeletehi mister C! i remeber when jamie and charmi did this Literal thing last year!
ReplyDeleteThere are some things I would rather forget...
ReplyDelete