hallmansean04
19.02.2021 •
Mathematics
Which ordered pair solves the system of equations?
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Ответ:
(1;1)
Step-by-step explanation:
1. if y=2x-1, then it is possible to substitute 2x-1 into the 2d equation:
5x-4(2x-1)=1, ⇒ 5x-8x+4=1, ⇔ -3x=-3, ⇔ x= 1;
2. if x=1, then y=2x-1=2-1= 1.
3. the required pair is (1;1)
Ответ:
5000m
12/3 = 4yd
2kg
8x16 = 128oz
9000ml
20qt
120+23 =143mins