RFEI Mathematics Examination 50 questions

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Answers to 50 questions of the test control work RFEI IN MATHEMATICS: 50 questions
1. Find a matrix C, equal to the amount mattresses, c A, if
2. Calculate the product of matrices
3. Calculate the product of matrices A and B
4.Nayti matrix inverse of the matrix A, if
5.Reshit system matrix method:

9.Reshit dodachu. The firm has been allocated 236 thousand. Conv. odes to buy 29 things "
Office equipment: a few computers for the price of 20 thousand. conv. u to
computer, office desk 8.5 thousand Uel odes to the table, chairs ON
1,5 thousand Uel odes to the chair. Poezho revealed that other computers can bridge
purchase of 19.5 thousand. conv. units., on tables -by 8 thousand. conv. units (chairs in the same PSC)
but making the same amount was purchased io 1 table anymore. Find out how
number of units of each type of equipment was purchased.
A) computers - 7; seats - 13; Table -10;
B) Computer - 6; seats - 11; Table -13;
B) computers - 9; seats - 10; -11 tables.

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