chelsea73
21.02.2021 •
Mathematics
Tan(60)x 20
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Ответ:
6.4008
Step-by-step explanation:
Ответ:
x=9
Step-by-step explanation:
81 is the product of -9 & -9. -9-9=-18. Therefore, (x-9)^2=0, and you get that x=9.