CPhill

If, by "nothing,"  you mean "zero,"   ....the answer is no....we cannot divide by zero

how do I write an equation of the perpendicular line 5y=x-10 through (3,-4)?

The slope of the given line = (1/5)

So the slope of our perpenducular line is the negative reciprocal of (1/5) = -5

And we can use the point-slope form to write

y - (-4)  = -5(x - 3)

y + 4 = -5x + 15

y = -5x + 11      this is in slope-intercept form

Thanks, Rom   !!!

(1/2)⁴  = 1/16

What are we solving for ???

Drop the decimals....we'll go back and add them at the end...so we have

   1886

x     87

----------

  13202

15088

----------

164082.  

We moved the decimals a total of 3  places to the right in the original problem....so....we need to move them back to the left  a total of 3 places in the answer  = 164.082

3/5 = .6     so   5 + 3/5 =  5 + .6  = 5.6

0.0008  =  8/10,000  = 1/1250   or 8 x 10^-4 in scientific notation

1200ft/3min = 400 ft / min

One equation, two unknowns.....we will have an  ifinite number of integer solutions [even though they may be difficult to identify......!!!!  ]