Which of the side lenghts could form a triangle A) 2cm, 2cm, 4cm B) 3cm, 5cm,10cm C) 3cm, 4cm, 5cm D) 4cm, 8cm, 15cm

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

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