Solve the problem for number 13.
2 answers:
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Step 1
Write out the system of equations
Step 2
Find the value of one pound of type A coffee, x
Therefore the answer will be;
The pounds of type B coffee she used is 64pounds
The pounds of type A coffee she used is 84 pounds
Complex numbers emerge when you take the square root of a negative number, since the imaginary unit is defined by the relation
, which implies
The only option involving the square root of a negative number is the last one.