Answer:
[tex]144 {v}^{2} + 76 = 85 \\ 144 {v}^{2} = 85 - 76 \\ 144 {v}^{2} = 9 \\ {v}^{2} = 9 \div 144 \\ \\ {v}^{2} = \frac{9}{144} \\ \\ {v}^{2} = \frac{1}{16} \\ \\ v = \sqrt{ \frac{1}{16} } \\ \\ v = \frac{1}{4} \: , - \frac{1}{4} \\ \\ v = 0.25 \: , - 0.25[/tex]
I hope I helped you^_^
