Determine if each triangle is acute, right, or obtuse.
15,12,19
14,11,8
6,7,5
show all necessary work!

What is the maximum total area that 450cm of string can enclose if it is used to form perimeters of two adjoining rectangles as shown?

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2