Incorrect. In our right triangle, $\displaystyle{a}={5}\usepackage{cmbright}\Huge\$ and $\displaystyle{b}={7}\usepackage{cmbright}\Huge\$ . By the Pythagorean Theorem, $\displaystyle{{c}}^{{2}}={{a}}^{{2}}+{{b}}^{{2}}={{5}}^{{2}}+{{7}}^{{2}}={25}+{49}\usepackage{cmbright}\Huge\$ . What does c equal?