Adoor opening is 2 meters high. if there is a 39 centimeter gap between the top of casey's head and the top of the door opening, how tall is casey?

centimeters

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?