Question

I need help on this problem ASAP !!! :)

Answer 1

`\displaystyle 8,9`

Step-by-step Step-by-step explanation:

Deduct one from nine to get eight, then use the Pythagorean Theorem:

`\displaystyle a^2 + b^2 = c^2 \\ \\ 8^2 + 4^2 = x^2 \hookrightarrow 64 + 16 = x^2 \hookrightarrow √(80) = √(x^2); 4√(5)\:[or\:8,94427191...] = x \\ \\ \boxed{8,9 \approx x}`

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