
Algebra help bad
If anyone can help me with this please do:)
Chapter 10 HIGHLIGHTS NOTE:when I type little# it mean the number next to the whole number
STATE WHETHER THE SENTENCE IS TRUE OR FALSE,REPLACE THE WORD IN PARENTHESIS OR NUMBER TO MAKE A SENTENCE TRUE
1. The number 27 is an example of a (PRIME number).
2.(2x) is the greatest common factor(gcf)of 12x small 2 and 14xy
3.(66) IS AN EXAMPLE OF A PERFECT SQUARE NUMBER
4.61 is a (factor) of 183
5.The prime factorization for 48 is (3times 4 little 2)
6.x small 225 is an example of a (perfect square trinomial.)
7.The number 35 is an example of a (perfect square trinomial)
8. (x23x70) is an example of a prime polynomial
9. The (unique factorization theorem)allows you to solve equations.
10.(b7)(b+7) is the factorization of all difference of squares.
STATE WHETHER EACH NUMBER IS PRIME OR COMPOSITE.IF THE NUMBER IS COMPOSITE,FIND ITS PRIME FACTORIZATION.
12. 33
14. 301
16. 378
FIND THE GCF OF THE GIVEN MONOMIALS
18. 12,18,40
20. 16MRT,30M SMALL2
22. 60X SMALL2 Y SMALL2,35XZ SMALL3
24.6A SMALL2,18B SMALL2,9B SMALL3
FIND EACH POLYNOMIAL
26. 6X SMALL2 y+12xy+6
28. 26ab+18ac+32a small a
30. a+a small2 b+a small3 b small3
FACTOR EACH POLYNOMIAL
32.4rs+12ps+2mr+6mp
34.dm+mr+7r+7d
36. a small3 a small2 b+ab small2+b3
FACTOR EACH TRINOMIAL,IF POSSIBLE.if the trinomial cannot be factored using integers,write prime.
38. x small2 9x36
40. b small2+5b6
42. 3a small2 13a +14
FACTOR EACH POLYNONMIAL,IF POSSIBLE.IF THE POLYNOMIAL CANNOT BE FACTORED USING INTEGERS,WRITE PRIME.
44.259Y SMALL2
46.2Y SMALL3 128Y
48.1/4N SMALL29/16R SMALL2
FACTOR EACH POLYNOMIAL,IF POSSIBLE.IF THE POLYNOMIAL CANNOT BE FACTORED USING INTEGERS,WRITE PRIME.
50.9K SMALL212K+4
52.32N SMALL280N +50
54. 49M SMALL2125M+81
sOLVE EACH EQUation and check your solution
56.y(y+11)=0
58. 2a small29a=0
60.3/4y=1/2y small2
62.2m small2 +13m=24
 MathsIsFun
 Administrator
Re: Algebra help bad
A bit of a long question  but I can start helping you.
1. 27 is not a prime number, because it can be divided by 9 and 3. It is, however 3x3x3, or 3 cubed, so it is a cubic number.
3. 66 can't be a square number: 8x8=64, and 9x9=81, so 64 and 81 ARE, but 66 ISN'T
12. If it isn't prime it is composite (ignoring 1 which is a special case). 33 can be divided by 11 and 3, so ISN'T prime, so is COMPOSITE
14. 301 can be evenly divided by 7, so must be .....
18. GCF for 12, 18, 40: 12=2x2x3, 18=2x3x3, 40=2x2x2x5. They all have 2 in common, so GCF=2. (Can't get any better than 6,9,20)
20. 16MRT,30M SMALL2  by "SMALL2" I imagine you are having difficulty writing "squared"  how about I write it as ^2, so rephrase that as: 16MRT, 30M^2. Well, the GCF of 16 and 30 is 2, and we can also see that one "M" is common. So the answer is 2M.
That is all I have time for at the moment, maybe someone else can do a bit?
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
Re: Algebra help bad
Thank you for explaining to me how to do it.My teacher at school talks way to fast,and when I ask her one on one help she still talks to fast and I end up not understanding.
 MathsIsFun
 Administrator
Re: Algebra help bad
Not a problem, eurasiangurl, here is another:
To solve algebra, you just have to move things around until it works out. A bit like a puzzle:
Let's try Problem No 56: y(y+11)=0
Let's expand it out a little: y times (y+11) =0 can be turned into: y times y + y times 11 =0 or: yy + y11 =0 , this is NOT the right way to write it down! so we will correct it to:
y^2 + 11y =0 (where y^2 means ysquared, or simply y times y)
Now, subtract 11y from both sides to get: y^2 + 11y  11y = 0 11y simplify it: y^2 = 11y
Now, divide both sides by y: y^2 /y = 11y /y simplify: y = 11
TA DA!
Just to be safe, let's check it: y(y+11)=0 substitute "11" for "y": 11 times (11 + 11) = 0 11 times (0) = 0 0=0
Great, we got it
If there was a part of this you didn't follow, let me know.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
Re: Algebra help bad
hey are you a teacher?and do you have yahoo messanger.
 MathsIsFun
 Administrator
Re: Algebra help bad
That is a great avatar, eurasiangurl.
I used to teach at Uni. I can't give you oneonone help, but feel free to post any questions and I or another member can respond. That way other people get to the chance to see questions and answers, or perhaps to correct me if I am wrong!
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
Re: Algebra help bad
really which uni,and how old are you,are you a female or male.What made you decide to make a math is fun forum.
 MathsIsFun
 Administrator
Re: Algebra help bad
I started the forum to give people a chance to discuss math problems, say good (or bad) things, share discoveries and generally express themselves. It is just good fun to help.
So, how are you getting on with your math? Give us another problem.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
 Roraborealis
 Super Member
Re: Algebra help bad
MathsIsFun wrote:I used to teach at Uni.
I want to that for my job when I leave school. Is it....well, an easy job and stuff?
School is practice for the future. Practice makes perfect. But  nobody's perfect, so why practice?
Re: Algebra help bad
to teach at uni you must need the correct qualidfications for example if you was to be a maths teacher you must have special grades and things *qualifications* in that subject. also im not quite shure if this information is correct but i can only try:)
the allmighty spatula * want a tip* dont eat yellow snow: the meaning of life is a number and that number is 1
 MathsIsFun
 Administrator
Re: Algebra help bad
Yeah, it is like teaching at Kinder it is all specialised on teaching skills, then as you go up the grades till Uni the emphasis slowly swaps over to knowing the subject you are teaching and less on your actual teaching skills.
As a result there can be really good teachers at Uni, and sometimes really bad ones who know their subject very well but have no ability to communicate it. I have studied under, and worked with, both!
A Uni job is not easy, but if you stay focused on helping the students it can be very rewarding.
Stay out of staff politics, though. By that I mean all the gossip and who is trying to take over whose job, and why this or that guy is really stupid with his theories, etc. But that advice applies to any job, really
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
Re: Algebra help bad
except some jobs i.e. cadets * i am a cpl in cadets* it begins learning the moi (method of instruction) then as you learn more things you will teach them. but you will get reminders and updates * if anything changes* on your moi and things like that but also you may need certain qualifications such as pi qualification * physical instructor* but otherwise it is like most jobs.
the allmighty spatula * want a tip* dont eat yellow snow: the meaning of life is a number and that number is 1
Re: Algebra help bad
im need help solving problems like 5g+h=g and u have to find g and other probs like that. after that u have to find the slope and map it
HELP PLEASE
 MathsIsFun
 Administrator
Re: Algebra help bad
Start with: 5g+h=g Subtract g from both sides: 5g+hg=gg Simplify: 4g+h=0 Subtract h from both sides: 4g+hh = 0h Simplify: 4g=h Divide by 4: g=h/4 DONE
See, we can solve stuff ... but you need to give us a bit of time
The slope would be 1/4 (or 4 depending on whether g goes updown or leftright)  the easiest way to graph it would be to get some graph paper (duh!) and plot some points using the formula, and connect the points with a ruler.
For example, plot:
When h=8, then g=2 When h=0 then g=0 When h=8, then g=2
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
Re: Algebra help bad
just give us time and all will be solved
the allmighty spatula * want a tip* dont eat yellow snow: the meaning of life is a number and that number is 1
Re: Algebra help bad
For y(y+11)=0, surely y=0 as well?
 MathsIsFun
 Administrator
Re: Algebra help bad
That is True!
But you should always be careful of zeros! Because zero times anything is zero. So I always work around them.
But in this case, YES, zero also works.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
 Milos
 Member
Re: Algebra help bad
y(y+11)=0, There have to be 2 possible solutions for this because it is square equation y^2+y11=0, so your explanation is incomplete. y1,2=(b+sqrb^24ac)/2a. As c=0 > y1,2=(11+11)/2
1st y1=(1111)/2=11 2nd y2=(11+11)/2=0 This is longer and more complicated but it proofs that there are two solutions. When we meet such a problem I would suggest this:
y(y+a)=0 where a is known number this equation can be correct when one of the agents =0
y=0 V y+a=0 y=a
Last edited by Milos (20050508 09:04:25)
 stewie
 Power Member
Re: Algebra help bad
jampot wrote:except some jobs i.e. cadets * i am a cpl in cadets* it begins learning the moi (method of instruction) then as you learn more things you will teach them. but you will get reminders and updates * if anything changes* on your moi and things like that but also you may need certain qualifications such as pi qualification * physical instructor* but otherwise it is like most jobs.
Oh no.. u do cadets  i bet u're just like greg
HAPPY HAPPY, JOY JOY Fatboy Slim is the band of the 90s, thats if you want to call it a band because its really a one man name
 MathsIsFun
 Administrator
Re: Algebra help bad
Hi again, Milos. Yes, you are perfectly right! Careful of those x^2 terms!
BTW you could have a go at some of the other problems that eurasiangurl posted ...
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
Re: Algebra help bad
~Hi im looking for sum help in maths in algebra like when people do it i just dont understand and when it comes to a test it makes me worrie can u help me please
Re: Algebra help bad
can you helpp me?! i have a project. the question is this. 1. why math seems to be the hardest subj.?! 2. why math is your favorite subj.?! please answer it.... i need 50 persons....
 MathsIsFun
 Administrator
Re: Algebra help bad
Hi jhovy, we will try and help (but you may not get 50 answers!), but before we do, could you:
* Join the Forum * Post this as a "New Topic" * explain in more detail what the project is about
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman
