ASAP help me am failing math and I need help! Just the congruence theorem and statement on both triangles

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?