Respuesta :

thexman8888

Answer:

3. X = 13.42

Step-by-step explanation:

12² + x² = 18²

144 + x² = 324

-144           -144

x² = 180

√x² = √180

x = 13.41640 (unsure of how teacher would want you to round this, probably in the hundredths)

x = 13.42

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