kcopeland210
08.12.2021 •
Mathematics
Which sentence is punctuated correctly? Finally Juno, and her satellite were able to return home to her family. Finally Juno and her satellite were able to return home to her family. Finally Juno and her satellite, were able to return home to her family. Finally, Juno and her satellite were able to return home to her family.
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Ответ:
x+y = 100 |*(-20) => -20x -20y = -2000
4.50x+20y=822.00 (+) =>
=> -15.50x = - 1178.00 => x = 1178.00/15.50 = 76 => y = 100 -76 => y = 24.