Which expression is equivalent to the expression below?
8(2r)+9r
8(2r)+9r

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 hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?