Answer:
The missing side length is 5.7
Step-by-step explanation:
Using the pythagoream theorem you can find the missing side length of a right triangle.
The formula is [tex]a^{2} + b^{2} = c^{2}[/tex] where a and b are the lengths of the triangle legs and c is the hypotenuse.
So yours would be:
[tex]7^{2} + x^{2} = 9^{2}[/tex]
Square the numbers:
[tex]49 + b^{2} = 81[/tex]
Isolate b:
[tex]b^{2} = 32[/tex]
Square root both sides:
[tex]b=\sqrt{32}[/tex]
Simplify:
[tex]\sqrt{32} = 5.7[/tex]
