A circle with radius of 6cm sits inside a circle with radiosof 9cm What is the area of the shaded region? Round your final answer to the nearest hundredth.

There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?