for all you math wizzards out there, I need help!!!!!!

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whitemeat

Big Wall climber

San Luis Obispo, CA

Topic Author's Original Post - Feb 21, 2014 - 09:09pm PT

well finals are coming up next week and my math teacher gave me a review packet with 50 problems that I dont know how to do. sooo... if any of you guys know your math then post up how to do the problems or the solutions and work, anything will help!!! help whitemeat out with school!!!!!!!

Braunini

Big Wall climber

cupertino

Feb 21, 2014 - 09:16pm PT

I could use some help with my tax return if anyone here is good with that sh#t.

JLP

Social climber

The internet

Feb 21, 2014 - 09:40pm PT

Your test is easy. It should take you less than an hour with no calculator, your teacher probably 10 minutes, a college student in math or engineering less than that. If you had a TI graphing calculator, you could solve and graph the whole thing that way. Lacking that, try http://www.mathportal.org/calculators.php However, you're only cheating yourself - like bringing a ladder to the crags - except worse. Good luck. I'll take fries with that.

Big Mike

Trad climber

Feb 21, 2014 - 09:59pm PT

Lol.. You just do it on purpose now don't you!!

happiegrrrl

Trad climber

www.climbaddictdesigns.com

Feb 21, 2014 - 10:01pm PT

You don't even rotate the images so the people you want to help you cheat don't have to crane their necks?

Also, it's spelled "wizards."

Sorry - yer gonna die!!!

matlinb

Trad climber

Albuquerque

Feb 21, 2014 - 10:05pm PT

I am going to assume you are not trolling .. . . .
You can check your work by entering the equations into the browser www.wolframalpha.com. For $4.99/month you can see all the solution steps.

My son uses this site to check his Algebra homework.

Ed Hartouni

Trad climber

Livermore, CA

Feb 21, 2014 - 10:05pm PT

I'd like to help, but I'm not sure how my solving all the problems and putting the solutions up here will get you through your test. It's unlikely that your teacher will use exactly the same problems... though your teacher is likely to use the same "ideas" behind the problems given.

So what would you propose?

Maybe if you start, and put up what you've done, and ask for checks, and perhaps hints, or if you're really having difficulty, working through a problem...

But you've got to take the initiative... to paraphrase Jimi Hendrix "You're the one who has to take the the test, when it's time to take the test..." not me.

...one other thing, I'll be out climbing this weekend, but there are a lot of others here who could help.

Clint Cummins

Trad climber

SF Bay area, CA

Feb 21, 2014 - 11:05pm PT

Mickey,

Which ones can you do?
1-2 look hard - these involve factoring a 3rd-degree polynomial.
9 looks easy. Can you do it?

Can you factor a second degree polynomial?
If not, learn how to do that first:

x^2 + bx + c = 0

factors as:
(x-r)*(x-s) = 0

where r+s = -b
and r*s = c

Basically you think of numbers r and s which multiply to get c and
add to get -b .
Then r and s are the values of x for which the polynomial is zero.
(Aka "roots").

You shouldn't have been able to do your homework problems without
knowing how to do this.

briham89

Big Wall climber

san jose and south lake tahoe, ca

Feb 21, 2014 - 11:15pm PT

MICKEY STUDY!!!!!! I DON'T WANT YOU TO HAVE TO TAKE SUMMER SCHOOL!!!1111!!1
WE GOTTA CLIMB THEN SO WORK HARD NOW!

If I was closer I wouldn't mind tutoring you, but that would be a long drive.

whitemeat

Big Wall climber

San Luis Obispo, CA

Topic Author's Reply - Feb 21, 2014 - 11:19pm PT

(2x+4)(2x+5) for number 9 clint??? thanks for all the replies, I know number 47 and a couple others but not much, well math is really easy for me to learn I just forget it REALLY fast...

keep them coming!!!

briham, I have a good enough grade to get a 0% and still pass... not going to happen though, I would drop out of school before giving up my summer yosemite dirt bag days!! we will crush briham!!!!

R.B.

Trad climber

47N 122W

Feb 21, 2014 - 11:21pm PT

#8

15+0.24m=30+0.16m

Solve for m
Answer m=187.5 (miles)

PS -- don't know this -- YOU FAIL!
BTW: you would spend $60 bucks each at that mileage

Ed Hartouni

Trad climber

Livermore, CA

Feb 21, 2014 - 11:24pm PT

you better be able to do question 50.

rgold

Trad climber

Poughkeepsie, NY

Feb 21, 2014 - 11:24pm PT

I could tell someone everything they need to know to do a handstand, but it would still take them several months of practice before they even begin to do one.

Many people could write down all the workouts you need to build to your first marathon, but if you try to do all the workouts in the week before the race---it ain't gonna work.

There are so many climbing analogies, and you're good enough at it to supply your own.

I don't know how you got to this sorry place, what you did or didn't do, but I don't think there's any kind of free get-out-of-jail card. If you really don't know how to do any of those problems, as you say, then looking at a bunch of solutions produced by people who do know how to do this stuff isn't going to help, at least not in the short term.

If that's the case, chances are your only option at this point is to retake the course with the intention of changing whatever conditions led to your current situation.

On the other hand, if you do know how to do them but just sorta forgot, then look at your old homeworks, your old tests, and the textbook and do some serious studying.

Ed Hartouni

Trad climber

Livermore, CA

Feb 21, 2014 - 11:26pm PT

for 48.

what should x^3-2x be at x=0?

that eliminates one of the answers,

what should it be for x very negative? that eliminates two others

what should it be for x very positive? that verifies the remaining answer...

briham89

Big Wall climber

san jose and south lake tahoe, ca

Feb 21, 2014 - 11:27pm PT

briham, I have a good enough grade to get a 0% and still pass... not going to happen though, I would drop out of school before giving up my summer yosemite dirt bag days!! we will crush briham!!!!

Woohoo!!!! I'm glad you are keeping your grades up. Can't wait for spring/summer!

Also don't ever drop out of school!!! I know you won't, but I have to be an "adult" sometimes and say things like that ;)