How would you prove that the diagonals of a rhombus are perpendicular.
A B C AND D are in the picture below!

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Agraphic designer created a logo on eight and a half by 11 inch paper. in order to be placed on a business card, the logo needs to be one and 7/10 inches by 2 and 1/5 in. what is the scale factor of the dilation

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]