You are rearranging your bookshelf to make it more interesting and harder to find anything on it. on one of the shelves you plan to put 12 biographies and 5 mysteries. how many ways can you arrange them on the shelf if you don't want any two mystery books next to each other (i. e. they need to be separated by at least one biography, maybe

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!

what is the model?

step-by-step explanation: