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12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?