If 14 karat gold necklace weighs 1.8 ounces how many ounces of pure gold does it contain

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Is the figure congruent? yes or no?