Question 2 (15 marks) clo 2,3 for the following matrix 7 2 1 0 3-1 a= -3 4 -2 write the minors of a. a) -3 -2 -34 c=8-11 where b) the cofactors of a is the matrix c -5 7 21 find adj(a) a= then c) if det(a)=1 d) recall that when ax = b find the solution of this system (x-a'b) hint: 21 1 7 2 y 5 -1 3 -1 -3 4-2z er e

Evaluate the dot product of (3,-1) and (1,5)

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?