Answer i will give 30 points!
which expressions are equivalent to z + (z + 6) z+(z+6) ?
choose all answers that apply:
a.) (z+z) + (z+6)(z+z)+(z+6)
b.) (z+6) + 6(z+6)+6
c.) 2(z+3)2(z+3)

So the correct answer is"none of the above".

Step-by-step explanation:

z+(z+6)=z+z+6=2z+6. \\  \\  (z+z)+(z+6)=z+z+z+6=3z+6. \\  \\ (z+6)+6=z+12 \\  \\

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.