In isosceles ∆ABC the segment BD
(with D ∈
AC
) is the median to the base
AC
. Find BD, if the perimeter of ∆ABC is 50m, and the perimeter of ∆ABD is 40 m
(I need statement and reasoning)

1. what is the measure of ∠abc? what is the measure of ∠abd?

Which is the completely factored from of xy^3-x^3y

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?