Calculate the modulus of -7i (complex numbers) (problem with solution)

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"Complex Numbers (10 problems) FREE DELUXE EDITION EBOOK" is the free workbook.
"Complex Numbers (10 problems with solutions) DELUXE EDITION EBOOK" is the workbook with the solutions.

Calculate the modulus of -7i (complex numbers) (problem with solution)

Calculate the modulus of -7i (complex numbers) (problem with solution)

0