need help calc 3!!!! life saveeer? 1) Find the volume of the tetrahedron with vertices (-4,-1,-4),(-8,-2,-2) ,(1,-3,-6),and (-9,-1,-3). 2) Find the volume of the parallelepiped with one vertex at (-2,-3,-5) and adjacent vertices at (2,-3,-1) , (-9,-7,-6) and (0,-6,-9) 3) A wrench 0.7 meters long lies along the positive -axis, and grips a bolt at [...]