Answer:
x = 5
Explanation:
In a kite, two disjoint pairs of sides are congruent, then
AB = AD , that is
4x = x + 15 ( subtract x from both sides )
3x = 15 ( divide both sides by 3 )
AB=AD
4x=x+15
3x=15
x=15/3
x=5
9.4m questions
12.2m answers