segment ab is a diameter of the larger circle. segment ab intersects a chord of the smaller circle pq at a right angle at point z. segment ab intersects a chord of the larger circle mn at a right angle at point o. if mo = 7x-4, and no =6x, what is thr length of mn.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Ibelieve the answer is c i worked it out three times but if my answer is wrong someone correct me