The diagram shows a circle with center O and radius r cm. The points P, Q and R lie on the circle. The line PR is a diameter of the circle and angle POQ=2radians. The area of sector QOR is 30cm less than the area of sector POQ Find the value of r.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Match each whole number with a rational, exponential expression 3 square root 27^2find the domain and range of the exponential function h(x)=125^x. explain your findings. as x decreases does h increase or decrease? explain. as x increases does h increase or decrease? explain.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.