Answer:
9.75
Step-by-step explanation:
To do this problem, use the Pythagorean Theorem, [tex]a^2 + b^2 = c^2[/tex]. Right now, you have that a = 7 and c = 12, so it would be
[tex]7^2 + b^2 = 12^2\\49 + b^2 = 144\\b^2 = 95\\b = \sqrt{95}[/tex]
Rounding to the nearest hundredth, you get: 9.75
