We can write a proportion between short and long legs:

Solving for k yields

Answer:
67+25=92
Step-by-step explanation:
65+25
separate tens and ones
60+7+20+5
reorganize
60+20+7+5
add tens to tens and ones to ones
80+12
separate tens and ones
80+10+2
add
90+2
add
92
None, because you must add the 2 shortest sides and the total must be greater than the longest side in order to be able to make a triangle.
Answer:
an angle supplementary to angle 3 is 125
Step-by-step explanation: