Ethan bought 4 greeting cards for $12 which proportion can be used to find p the price for nine of the same cards

What properties allow transformation to be used as a problem solving tool

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c