What is 2/4 in a decimal that is a fraction if u didn't know

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

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