Answer:
11.0
Step-by-step explanation:
In a right triangle we can use Pythagoras theorem A² + B² = C² to calculate the hypotenuse as the square root of the sum of the squares of the other two sides. With side lengths 7 inches and 9 inches respectively we get,
[tex]\sqrt{7^{2} +x^{9}} = \sqrt{49 +81} = \sqrt{120} \approx 11.0[/tex]
