True or false: When it's argument is restricted to (0,2pi), the polar form of a complex number is *not unique*.
2 answers:
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The cafeteria sold 41 corn chips and 80 potato chips.
Step-by-step explanation:
Let,
Corn chips = x
Potato chips = y
Price of corn chips = $0.80
Price of potato chips = $0.60
According to given statement;
x+y= 121 Eqn 1
0.80x+0.60y=80.80 Eqn 2
Multiplying Eqn 1 by 0.80
Subtracting Eqn 2 from Eqn 3
Dividing both sides by 0.20
Putting y=80 in Eqn 1
The cafeteria sold 41 corn chips and 80 potato chips.
Keywords: linear equation, subtraction
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