Please Help! In Triangle ABC, D is a point on side AB, E is a point on line AC and DE is a parallel to BC. Prove that AD:DE = AB:BC(first, prove AD:AB=DE:BC. Then interchange the means of the proportion

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer