PLS HELP ME IM STRUGGLING Find the value(s) of K for which the expression is a perfect square trinomial

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Abe is a triangle. can you use the sss postulate or the sas postulate to prove triangle abc = triangle aed? by sss only neither apply both apply by sas only