Respuesta :

Base length of the larger triangle = 39 + 39 = 78
Base length of the smaller triangle = 39


[tex] \dfrac{78}{39} = \dfrac{x}{46} [/tex]

[tex]39x = 78 \times 46[/tex]

[tex]39x = 3588[/tex]

[tex]x = 92[/tex]


Answer: x = 92 (Answer A)