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pishuonlain [190]
3 years ago
7

Find the solution of the system of equations. -x+3y=9 -x-y=-3

Mathematics
1 answer:
Inessa [10]3 years ago
4 0

Step-by-step explanation:

use the steps of simultaneous

elimination steps

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As instructor grades exams, 30%; term paper, 20%; and final exam, 50%. A student had grades of 75,80, and 85, respectively, for
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Okay, so 75 counts for 30% (exams), 80 counts for 20% (term paper), and 85 counts for 50% (final exam)

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3 years ago
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