What the theorem is used?

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

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m