Which property does the equation below demonstrate? 6(3 + 9) = 18 + 54 question 21 options: a. associative b. identity c. commutative d. distributive

It is D, D all the way lol good luck hope this helps

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

X= 49; x = 4step 1: foilstep 2: equal both to 0step 3: find x individually