Write a word problem that will use the equation 2/6 *8/10 =x in order to solve.Then simplify and multiply to solve.

1. Debra use http://www.webmath.com/equline1.html
   You want to find the equation for a line that passes through the two points:
   (4,3) and (1,5).
   put these into
   http://www.webmath.com/equline1.html
   and it will explain the maths involved
   is
   from http://www.webmath.com/equline1.html
   y=-2/3x+17/3
   midpoint M so x increased 3 from point k so at point JK would have to have x as 7
   y=2/3*7+17/3
   y=14/3+17/3
   y=31/3
   y=10.3
   point J should be 7,10.333333333333333333333333334
   or 7, 10 and 1/3
   http://www.webmath.com/equline1.html

common denominator 9
divide 9 on both sides of ratio assuming the comma is being used as a decimal point in the example
9 into eight is zero
move 8 to right of comma
9 into 0,81
is 9
0,9

9 into 9 is one
ratio is 0,9 : 1

Solution = 1.33 + 2.25 = 3.58 or 3 37/64

810 divided 9= 90

To convert a foot measurement to a nanometer measurement, multiply the length by the conversion ratio. One foot is equal to 304,800,000 nanometers, so use this simple formula to convert:
1 ft = 304,800,000 nm
nanometers = feet × 304,800,000
The length in nanometers is equal to the feet multiplied by 304,800,000.
For example, here's how to convert 5 feet to nanometers using the formula above. 5' = (5 × 304,800,000) = 1,524,000,000 nm

There's a guide for that:
Canon 788SG User Instruction Simultaneous Linear Equations

Oh wow, lots of math going on here...

There are 4840 square yards in an acre and 9 square feet in a square yard (4840 x 9 = 43,560).

An acre is an old timers measurement used in agriculture...
it was 4 poles wide and 40 poles long. A pole is equivalent to sixteen and a half feet. So back then, an acre was a piece of farming land 660 feet long (220 yards or one eighth of a mile) and 66 feet wide (22 yards or one eightieth of a mile).

Acre is a measure of area, which would be square feet.

Feet are a measure of distance.

The best you could do is something like this:
An acre is 43, 560 square feet.
Draw/imagine a square or a rectangle that would cover that much area.

If it is a square, it would be (approximately) 208.7 feet on each side.

Its perimeter (the distance around it if you walk an imaginary fence around you acre-sized plot) would be 834.8 feet.

Trying to to figure out an acre of 'Circle' - hmmmmm???

Radius = 1/2 of Diameter

sorry, just can't wrap my head around this to come up with the correct equation.
maybe we can get lucky with some other brainiac taking what I did provide and come up with a solution for you?

Square - It would be 208.7 feet across if you walk across it, and the same if you walk the other way across it.