What is the distance between -2 and 7 on a number line? how do you know?

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

What is the exact area of a circle with a diameter of 50 centimeters? a.87.9 square centimeters b.379.9 square centimeters c.1962.5 square centimeters d.4923.5 square centimeters

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)