Evaluate this 3 times 9 plus 10 times 36/6

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Which expression is rational? 6. , square root two, square root 14, square root 49

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