Math Help

Archive for November, 2007

Women Are Researchers.mp4

Question: I need a good online math tutor for my 12yr old daughter who is starting 7th grade?

My job relations have to do with math, I have been very good at math during my younger years but my daughter definitely didnt take after me. She finds math to be very difficult and its hard for me because i work full time and cant give her that extra time she need. I know there are some really good sites that can help her but what are they? will this site help her daily? Do you have or know a child that was referred and improved?

Answer: MATHS

http://sparknotes.com/math

http://www.webmath.com/

http://mathworld.wolfram.com/

http://www.funbrain.com/kidscenter.html…

http://www.funbrain.com/kidscenter.html…

http://www.math.com/

http://encarta.msn.com/

Math Help..!!!

http://mathforum.org/library/levels/9/…..

http://homeworkhelp.aol.com/

http://www.algebra-online.com/

http://www.softmath.com/

http://www.mathexplained.com

Kevin, Liverpool, England.

Basic Shop Math -www.Bergwall.com- Online Auto Tech Training

Question: C’mon there has to be someone that can help with MATH FRACTIONS?! plz?

Need help with math fractions?

Answer: On 1, if (x + 3) / (x – 5) = 1, then x + 3 = x – 5 which is impossible. The only other possible boundary point is x = 5 since that makes the bottom undefined. So you need to try a point on either side of 5.

try 6: 6 + 3 / 6 – 5 = 9/1 not < 1
try 4: 4 + 3 / 4 - 5 = 7/-1 is < 1

so the answer is (-infinity, 5)

#2 make it =. cross multiply: x^2 - 2x = x^2 + 4x + 3
-2x = 4x + 3
-6x = 3
x = -3/6 = -1/2
and undefined if x = 2 or -3

so intervals to check:
x < -3, -3 < x ≤ -1/2, -1/2 ≤ x < 2, and x > 2

try -4: -3/-6 ≥ -4/-1 which is 1/2 ≥ 4 false
try -1: 0/-3 ≥ -1/2 which is 0 ≥ -1/2 true
try 0 : 1/-2 ≥ 0/3 which is -1/2 ≥ 0 false
try 3: 4/1 ≥ 3/6 which is 4 ≥ 1/2 true

so (-3, -1/2] U (2, infinity)

Do the others basically the same; solve as if it said equals; look for any undefined points, then check numbers in each interval between solutions/undefined points

Fractions Basics Proper Improper Mixed Math Learning Upgrade