Question: determine all solutions to the diophantine equation 3x + 7y = 4

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters