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- Janet Yang

I can answer questions in Algebra, Basic Math, Calculus, Differential Equations, Geometry, Number Theory, and Word Problems. I would not feel comfortable answering questions in Probability and Statistics or Topology because I have not studied these in depth.

I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

Co-author of An Outline of Scientific Writing: For Researchers With English as a Foreign Language

I have a Bachelor's degree in Applied Mathematics from the University of California at Berkeley.

George White Elementary School. Homework Help program at the Ridgewood Public Library, Ridgewood, NJ. Individual students.

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Randy | 10/15/16 | 10 | 10 | 10 | Courteous, friendly, helpful response !! |

Randy | 09/12/16 | 10 | 10 | 10 | Friendly, helpful, courteous response !! |

Randy | 08/30/16 | 10 | 10 | 10 | I am not familiar with derivatives of ..... |

Randy | 07/26/16 | 10 | 10 | 10 | Thanks, I understand now. Friendly, prompt, courteous ..... |

Randy | 05/22/16 | 10 | 10 | 10 | Friendly, courteous, detailed reply !! |

B = mA C = A+B By substitution, C = A + mA. By the distributive rule, A + mA = A(1+m). ::::: D = C+B By substitution, D = A(m+1) + mA. By the distributive rule, D = A(2m+1). It is given that

"A, B, C, and D invest $s." A+B+C+D = s "B invests m times as much as A" B = mA "C invests as much as A and B combined" C = A+B = A+(mA) = A(m+1) "D invests as much as C and B combined" D

sec⁶θ - tan⁶θ - 3sec˛θtan˛θ = (sec˛θ -tan˛θ) (sec⁴θ + sec˛θtan˛θ + tan˛θ) - 3sec˛θtan˛θ = ((1+tan˛θ) - tan˛θ) (sec⁴

I'm assuming that the "outside area" is not part of the garden. garden area = 80 yd × W yd = 4,840 yd˛ W = 60.5 yd dimensions of garden plus outside area: length = 80 + 2×7 = 94 yd width = 60

The solution shows only the end result, after converting unit. It doesn't show the previous steps in which conversion factors are applied and units canceled out. I think would be clearer if the conversion

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