To represent 173 in 9-bit binary, first convert 173 to binary using the division method: 173 ÷ 2 = 86 (Quotient), remainder 1 86 ÷ 2 = 43 (Quotient), remainder 0 43 ÷ 2 = 21 (Quotient), remainder 1 21 ÷ 2 = 10 (Quotient), remainder 1 10 ÷ 2 = 5 (Quotient), remainder 0 5 ÷ 2 = 2 (Quotient), remainder 1 2 ÷ 2 = 1 (Quotient), remainder 0 1 ÷ 2 = 0 (Quotient), remainder 1