Respuesta :

Ekkie
the answer is D: 40

Hope this helps
Hrishii

Answer:

4

Step-by-step explanation:

KLMN is a rectangle.

Measures of the Diagonals of a rectangle are equal.

Therefore,

KM = LN

10x + 24 = 64

10x = 64 - 24

10x = 40

x = 40/10

x = 4