if the mean of A and B is 20 the mean of B and C is 23 and tge mean of A, B and c is 18 what is the mean of A and C

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.