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Өзін өзі тану ​

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes