What is the circumference of a circle with area 81 \pi square inches?

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual