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Get the value of x and y..in 14x-12y=0 49x-42y=0

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The value of x=6 and y=7

Posted on Oct 06, 2010

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What is x-3y=-12, 4x+6y=-12 in elimination ?


then x = 3y-12, then 4(3y-12) +6y=-12, then (12y-48)+6y=-12, then 12y-48+6y=-12, then 18y=36, then y=2. x=3y-12, x=3(2)-12, x=6-12, x=-6.

Mar 05, 2015 | Office Equipment & Supplies

1 Answer

How do solve if X=1/x and Y=1/y, 12/x-12/y=7


There are no solutions.

x = 1/x
multiply both sides by x: x^2 = 1
take the square root of both sides x = sqrt(1)
this gives x = 1 or x = -1
similarly, y = 1 or y = -1

12x = 12 or 12x = -12
12y = 12 or 12y = -12

subtracting 12y from 12x can only give 24, 0, or -24, never 7.

Nov 18, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

How do solve if X=1/x and Y=1/y, 12/x-12y=7


There are no solutions.

x = 1/x
multiply both sides by x: x^2 = 1
take the square root of both sides x = sqrt(1)
this gives x = 1 or x = -1
similarly, y = 1 or y = -1

12x = 12 or 12x = -12
12y = 12 or 12y = -12

subtracting 12y from 12x can only give 24, 0, or -24, never 7.

Nov 18, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

How do solve the problem, if X=1/x and Y=1/y, solve 12/x-12/y=7?


There are no solutions.

x = 1/x
multiply both sides by x: x^2 = 1
take the square root of both sides x = sqrt(1)
this gives x = 1 or x = -1
similarly, y = 1 or y = -1

12x = 12 or 12x = -12
12y = 12 or 12y = -12

subtracting 12y from 12x can only give 24, 0, or -24, never 7.

Nov 18, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

Polynomial


What are the following(?) choices.
(X+3) is a factor of 14X^2+47X+15
You can verify that 14X^2+47X+15=(X+3)(14X+5)

May 22, 2013 | Office Equipment & Supplies

1 Answer

Remainder theorem


(X+3) is a factor of 14X^2+47X+15
You can verify that 14X^2+47X+15=(X+3)(14X+5)

May 22, 2013 | Office Equipment & Supplies

1 Answer

Dvd not burning


Sony made burners that required caddies a while back. And by looks of this post they also made special discs, listing for as much as $73 ea. Besides, magneto it more like tape.

Yours drive is a regular HP laptop burner. They are not compatible. You can get blank DVD's for $.50 each.

Oct 21, 2012 | Sony Disc R/W Magneto Optical 5.25 in....

1 Answer

If x units of a product cost C dollars to make and revenue of R dollars, the value of x where the expression for C and R are equal is called the break even quantity, the number of units that produce zero...


Set C = R
This means 16X - 20000 = 14X
Add -16X to both sides
-20000 = -2X
Divide both sides by -2
10000 = X

This means that the break even point is 10000 units.

Oct 10, 2010 | SoftMath Algebrator - Algebra Homework...

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