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Expertise

Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!

Experience in the area

Over 15 years teaching at the college level.

Organizations

NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.

Education/Credentials

B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
UserDateKCPComments
Kumar Shantanu01/27/12101010 
suzi01/17/12101010 
John01/08/12101010 
Maggie01/06/12101010Thank so much, Abe!
Angela12/31/11101010Thanks Abe. I will have to let .....

Recent Answers from Abe Mantell

2012-01-17 word problems:

Hello Suzi,    17 girls planting 51 trees in one day ==> 1 girl can plant 51/17 = 3 trees per day.    Now divide that by 24 hrs in a day to get: 1 girl can plant 3/24 = 1/8 of a tree in 1 hr.    Thus,

2012-01-10 Algebra I/Elimination using Multiplication:

Hello Lexi,    This can be done with only one variable, but since you mentioned elmination,  I gather you need to use two variables, so...    Let x=$ that increased by 6% and y=$ that increased by 9%

2012-01-06 Quadratics:

Hello John,    The equation governing the motion of an object subject to acceleration is:  y(t)=(1/2)at^2+vot+yo, where a=the acceleration, vo=initial velocity, yo=initial position    In this case: a=g=-32

2012-01-05 Algebra woes.:

Hello Maggie,    The rational root theorem tells us that the possible rational roots of a polynomial  with integer coefficients are factors of the constant term divided by factors of  the leading coefficient

2011-12-31 Pi:

Hello Angela,    I think you mean "is pi still irrational (not perfect) if expressed in another base"...yes?  A perfect number is a whole number whose sum of proper divisors equals itself.  For example

 

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