Answer:
GH = 15
Step-by-step explanation:
In a trapezoid, the length of the median is one-half the sum of the lengths of the bases. Therefore:
[tex]9x - 3 = \frac{1}{2} (19 + 5x + 1)[/tex]
[tex]18x - 6 = 5x + 20[/tex]
[tex]13x = 26[/tex]
[tex]x = 2[/tex]
[tex]9(2) - 3 = 18 - 3 = 15[/tex]
