Gabr02
30.10.2019 •
Mathematics
X+y=−3 x−y=7 a) rewrite this system of equations in the format = where and are column vectors. b) rewrite the system of equations in the format = where and are row vectors. c) show that matrices and are invertible. d) find the inverses −1 and −1. e) use the inverses determined in part (d) to solve the system = for and the system = for (i.e. to determine the values of x and y).
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Ответ:
x = 7
Step-by-step explanation:
Assuming the quadrilateral is a parallelogram, then the diagonals bisect each other.
7x - 8 = 41
7x = 49
x = 7