Answer:
b. [tex]\displaystyle x ≈ 9,9, y = 7[/tex]
Step-by-step explanation:
In a 45°-45°-90° triangle, both legs are congruent [tex]\displaystyle [x],[/tex]whereas the hypotenuse is represented by [tex]\displaystyle x\sqrt{2}.[/tex] So, evaluate:
[tex]\displaystyle hypotenuse \hookleftarrow x\sqrt{2} \\ \\ 9,8994949366... = \boxed{7\sqrt{2}}[/tex]
Therefore, you have this:
[tex]\displaystyle 9,9 ≈ x[/tex]
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