5x - 2x+3=24. HELP ASAP PLS

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?

X+ y = 5 ; x - y =3 solve using linear combination

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