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Lina Trujillo
Mathematics
7 August, 11:06
Solve the system
x-0.25y=11750
-0.20x + y=10000
+4
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1
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Cristopher Mitchell
7 August, 11:25
0
X - 0.25y = 11,750 ⇒ x - 0.25y = 11,750
-0.2x + y = 10,000 ⇒ 0.05x - 0.25y = - 2,500
0.95x = 14,250
0.95 0.95
x = 15,000
x - 0.25y = 11,750
15,000 - 0.25y = 11,750
- 15,000 - 15,000
-0.25y = - 3250
-0.25 - 0.25
y = 13,000
(x, y) = (15,000, 13,000)
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