What is the multiplicative inverse of - 1/9

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

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What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.