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- Abe Mantell

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!

Over 15 years teaching at the college level.

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

B.S. in Mathematics from Rensselaer Polytechnic Institute

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

User | Date | K | C | P | Comments |
---|---|---|---|---|---|

JohnnyX | 08/24/16 | 10 | 10 | 10 | Your unique knowledge and the way you ..... |

emmanuel | 08/09/16 | 10 | 10 | 10 | |

Prashant S Akerkar | 07/24/16 | 10 | 10 | 10 | Dear Prof Abe Thank you. Prashant |

Prashant S Akerkar | 07/24/16 | 10 | 10 | 10 | Dear Prof Abe Thanks. Prashant |

Alice | 07/10/16 | 10 | 10 | 10 | Thank you so much! |

Hello Alice, Whenever two fractions are equal to each other, we can always "cross multiply" and get an equivalent equation. Thus, 6/(n-4)=10/n becomes 6n=10(n-4), now distribute the 10 on the right

Let x=the cost per tennis racquet, and y=the cost per pair of tennis shoes. Thus, we get: 1. 150x + 50 y = $14,000 and 2. 80x + 30y = $7,650 We can simplify each... 1. divide through by 50, 2

Hello Desirai, Have you searched the Internet for help sites? Here are some links for you: http://www.purplemath.com http://www.sosmath.com http://mathforum.org/dr.math/ http://math.whatcom.ctc

Assuming the 128 ft/sec is vertical (i.e. straight up), then... h(t)=128t-16t^2 gives the equation of motion in the vertical direction (i.e. the height above the ground). Since this is a parabola, we

Hello Tressa, Consider this problem: 2x+6y-2=2(x+3y-1), yes? Now look at: (1/2)x+(3/2)y-1/2=(1/2)x+(1/2)*3y-(1/2)*1, now factor the common factor of 1/2 (just like in the above problem we factored

Algebra

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