Determine which of the following subsets of r 3 are subspaces. briefly explain. i) the set s1 of vectors (x, y, z) ∈ r 3 such that xyz = 0 ii) the set s2 of vectors (x, y, z) ∈ r 3 such that x + y + z = 0 iii) the set s1 of vectors (x, y, z) ∈ r 3 such that y 2 + z 2 = 0 iv) the set s1 of vectors (x, y, z) ∈ r 3 such that y 2 − z 2 = 0

Common problems that can arise among groups. explain in four or five sentences what can cause the specific or general problem. in addition, explain what impact that conflict can have on group cohesion as well as productivity.

On january 1, 2018, jay company acquired all the outstanding ownership shares of zee company. in assessing zee's acquisition-date fair values, jay concluded that the carrying value of zee's long-term debt (8-year remaining life) was less than its fair value by $21,600. at december 31, 2018, zee company's accounts show interest expense of $14,440 and long-term debt of $380,000. what amounts of interest expense and long-term debt should appear on the december 31, 2018, consolidated financial statements of jay and its subsidiary zee? long-term debt $401,600 $398,900 $401,600 $398,900 interest expense $17,140 $17,140 $11,740 $11,740 a. b. c. d.

Which of these is not a result of regular exercise