Models for two mixed numbers are
shown below. what is the sum of the
numbers? what is the difference? show
your work. answer as soon as possible

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2