What is the product? 3 •[1 -4
-4 5
5 -7]
-1 8 4
o [3 -12 15 -21] ]
o [4
[3 12 15 21
o [4 -12
-12 8 -21]
o [3

Which graph represents 2x-5y< 15

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking