Answer: 32
Explanation:
 In the kite figure, it is given that BD is bisected by AC since it's a kite shape, meaning that the two separate segments of BD are congruent.
Given:
 2x + 6 = 4x - 4
Subtract 6 from both sides of the equation:
 2x = 4x - 10
Subtract 4x from both sides of the equation:
 -2x = -10
Divide both sides of the equation by -2:
 x = 5
 Next, we can substitute this in and solve for the length of BD.
Given:
 2x + 6 + 4x - 4
Substitute:
 2(5) + 6 + 4(5) - 4
Multiply:
 10 + 6 + 20 - 4
Compute:
 32