Answer:
missing side length = 9
Step-by-step explanation:
[tex]c^{2} = a^{2} + b^{2}[/tex]
a = 6
b = 7
c = missing side
[tex]c^{2} = 6^{2} + 7^{2}[/tex]
[tex]c^{2} = 36 + 49[/tex]
[tex]c^{2} = 85[/tex]
[tex]\sqrt{c^{2} } = \sqrt{85}[/tex]
[tex]c = 9.219 = 9[/tex]
