For a system of vectors U = {(1,2, 6); (0, -1, -5);(2,3,7); (1,0,-4) } .
a. Find the number of dimensions and a basis W of the subspace generated by the vector system U .
b. Find the parameter k to
u = (2,3, k^2+1) is a linear combination of W , and it follows that [ ]W
u .

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6

Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475