When the sum of 24 and 7 is multiplied by the difference of 18 and six what is the product?

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

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)