If the measure of a tangent-chord angle is 54 degrees, then what is the measure of the intercepted arc inside the angle?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?