Find the bases for col a and nul a, and then state the dimension of these subspaces for the matrix a and an echelon form of a below 1 2 -2 1 3 1 2 2 3 5 10 1-28 8 0 0 1-3 0 -24 1 7-6 0 0 0 0 0 a basis for col a is given by (use a comma to separate vectors as needed.) the dimension of col a is a basis for nul a is given by (use a comma to separate vectors as needed.) the dimension of nul a is

If 1/2+2/5s=s-3/4,what is the value of s? a. s=3/4 b. s=25/12 c. s=-25/12 d. s=-3/4

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.