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if 9(x - 9) = -11, then x = ?
-90
-2/9
70/9
108

70/9

Step-by-step explanation:

multiply the parenthesis

add the constant together then divide

70 / 9

Step-by-step explanation:

9(X - 9) = -11

9X - 81 = -11

      9X = -11 + 81

      9X = 70

        X = 70 / 9

18cm

Step-by-step explanation:

Flip the triangle so it makes a right triangle. Do 6x6. This will equal 36. Divide it by 2, and you get 18. Make sure to add the units. (cm)