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# Math for Kids

#### 2016-11-20 Geometry - Math Project Help:

Euler's formula was for complex numbers of the form x = a + bi,   where i=√(-1) and x is in radians.    The formula is in exponential and trigonometric notation.  It is e^(ix) = cos(x) + i*sin(x)

#### 2016-11-18 Algebra - Algebra:

Hi Jimmy,          The problem you suggested is rather interesting. Trying to crack things apart by brute force manipulation will probably not get you anywhere since it involves both conventional algebraic

#### 2016-11-02 Geometry - Slope angle of a hexagonal prism:

Sorry about the delay, but my computer failed, so I had to get a new one.    Let's draw a graph such that the x-axis is on the bottom hexagon, one corner to an opposite corner.  Since they are all equal

#### 2016-11-01 Word Problems - math word problem:

Let A be the number of uprights and B be the number of spinets.    The total time is 40 hours a week, and that is 2A + 3B, so the equation is 3A + 2B = 40.  The tuner would like to earn \$560.  The total

#### 2016-11-01 Word Problems - Compound Proportions:

Your conversion factor is the speed of work, i.e., amount of time per job.   men × days gives you the amount of time  houses is the number of jobs  so the speed of work is the number of man-days per house