Calculate the value for each determinant: Calculate the value for each determinant:
Can any of you help out!!!?

Step-by-step explanation:

               = 12 - 3

               = 9

               = -8 - 4

               = -12

                = -60 + 12

                = -48

            = -2 + 2

            = 0

              = 17

          = 1

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer