![subject](/tpl/images/cats/mat.png)
Mathematics, 07.03.2020 02:31 bdgray7759
Let A and B be square matrices. Show that if ABequals=I then A and B are both invertible, with Bequals=Upper A Superscript negative 1Aโ1 and Aequals=Upper B Superscript negative 1Bโ1.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 12:40
The graph below could be the graph of which exponential function?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:30
Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:00
Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00
He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean and standard deviation according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%
Answers: 3
You know the right answer?
Let A and B be square matrices. Show that if ABequals=I then A and B are both invertible, with Bequa...
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 16:31
![question](/tpl/images/cats/fizika.png)
Physics, 03.11.2019 16:31
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 03.11.2019 16:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 16:31
![question](/tpl/images/cats/himiya.png)
Chemistry, 03.11.2019 16:31
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.11.2019 16:31
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 03.11.2019 16:31
![question](/tpl/images/cats/istoriya.png)
History, 03.11.2019 16:31
![question](/tpl/images/cats/istoriya.png)
History, 03.11.2019 16:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 03.11.2019 16:31