Angle A and B are supplementary. If the measure of a = 6x+17 and the measure of b = 3x+10, find the measure of a

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

Which is the focus of a parabola with equation y2=4x

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