Henry has 342 marbles in bags. if 9 marbles are in each bag, how many bags does henry have? how bags will he have if he gives 15 bags to him brother ?

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

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

How do i find the missing angle measure in a polygon