Which equation is true for any value of y?
a. 4y^2+2=(4y*4y)+2
b. 4y^2+2=(4y+y)+2
c. 4y^2+2=4(y+y)+2
d.4y^2+2= 4(y×y)+2

Two lines parallel to a third line are parallel to each other. always sometimes or never

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?