add the equations and solve for the remaining variable.
substitute the value into either equation and solve.
check the solution.
step-by-step explanation:
Answer from: Quest
b
step-by-step explanation:
the word superfluous means unnecessary
Answer from: Quest
Heptagon is the correct ans
Answer from: Quest
make sure you have version 2.50
try looking in the very back of the book : )
step-by-step explanation:
you can download it here
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Mathematics, 21.06.2019 15:30
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