I put a random subject but can u please help with this question

Answer is Parasitism, ticks benefit from drinking blood from the cows but cows feel uncomfortable when ticks drink their blood. its parasitism because a tick acts like a parasite when it digs under the skin of a cow to drink blood.

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or