![\left[\begin{array}{ccc}7&31\\142&19\end{array}\right]](/tpl/images/1209/1934/b370d.png)
= 7(19) - 142(31) = - 4269 ![\left[\begin{array}{ccc}7&11&21\\55&-8&2\\-16&-1&-9\end{array}\right]](/tpl/images/1209/1934/787ba.png)
= 7(- 8)(- 9) + 11(2)(- 16) + 21(55)(- 1) - 21(- 8)(- 16) - 7(2)(- 1) - 11(55)(- 9) = 1768 ![\left[\begin{array}{ccc}9.07&6.02&2.01\\-30.7&2.5&3.5\\3.55&-1.1&2.35\end{array}\right]](/tpl/images/1209/1934/26e73.png)
= 9.07(2.5)(2.35) + 6.02(3.5)(3.55) + 2.01(- 30.7)(- 1.1) - 2.01(2.5)(3.55) - 9.07(3.5)(- 1.1) - 6.02(- 30.7)(2.35) = 647.3561 
Help plz
...
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 18:30
Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?
Answers: 1
Mathematics, 21.06.2019 18:40
Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2
Answers: 1
You know the right answer?
Questions
Chemistry, 08.12.2020 20:50
Mathematics, 08.12.2020 20:50
Chemistry, 08.12.2020 20:50
Physics, 08.12.2020 20:50
Social Studies, 08.12.2020 20:50
Mathematics, 08.12.2020 20:50
Mathematics, 08.12.2020 20:50
Biology, 08.12.2020 20:50
Mathematics, 08.12.2020 20:50
