Use the appropriate property of determinants to find a.a. do not evaluate the determinants.

Mathematics

1 answer:

yan [13]2 years ago

3 0

Bunininonucyvunijojko

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Please I need help with this

Vera_Pavlovna [14]

Step-by-step explanation:

The x are the values that you have been given

6 0

2 years ago

Solve it by substitution method:- 5x - 6y=-9 and 3x + 4y= 25

user100 [1]

$\left\{\begin{array}{ccc}-5x-6y=-9&/\cdot2\\3x+4y=25&/\cdot3\end{array}\right\\+\left\{\begin{array}{ccc}-10x-12y=-18\\9x+12y=75\end{array}\right\\------------\\.\ \ \ \ \ \ \ -x=57\\.\ \ \ \ \ \ \ \ \ x=-57\\\\3\cdot(-57)+4y=25\\-171+4y=25\\4y=25+171\\4y=196\ \ \ \ /:4\\y=49\\\\Solution:x=-57;\ y=49.$