If a1 is the first of n geometric means between a and b, show that a1^n+1= a^b please the answer is needed urgently

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?