Decimals to fractions, how do I change 0.68 to a fraction or mixed number

how do I change 0.68 to a fraction or mixed number

Reducible to quadratic form, Solve the equation  x 4 - 7 x 2 +12 = 0 ...

Solve the equation  x 4 - 7 x 2 +12 = 0 Solution Now, let's start off here by noticing that                          x 4  = ( x 2 ) 2 In other terms, here we can

Complex number, let x,y,z be the complex number such that x+y+z=2,x^2+y^2+z...

let x,y,z be the complex number such that x+y+z=2,x^2+y^2+z^=3,x*y*z=4,then 1/(x*y+z-1)+1/(x*z+y-1)+1/(y*z+x-1) is

Vertical angles,

Vertex, All parabolas are vaguely "U" shaped & they will contain a highest ...

All parabolas are vaguely "U" shaped & they will contain a highest or lowest point which is called the vertex.  Parabolas might open up or down and may or may not contain x-inte

Function evaluation, f(x)=xsqr-1

f(x)=xsqr-1

Average rate of change .., find the average rate of change of the function ...

find the average rate of change of the function f(x)=4x from X1=0 to x2=6

5x., 5x=25

5x=25

#title., if x=7 an y=9 and the answer is 98 what is the expresson?

if x=7 an y=9 and the answer is 98 what is the expresson?

Solve for the indicated variable, y=mx+b for x

y=mx+b for x