Circle o has a circumference of 36pi cm

Circumference = 2 pi r , so

36 pi = 2 pi r

r = 36 pi / 2 pi

= 18 cm  answer

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3