(a) \( 35,765=3.5765 \times 10^{\mathrm{a}} \) \( \mathrm{a}=\square \)
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To express \( 35,765 \) in scientific notation, you need to convert it to the format \( m \times 10^n \), where \( 1 \leq m < 10 \). In your case, \( 35,765 \) becomes \( 3.5765 \) multiplied by \( 10^4 \). Thus, \( \mathrm{a} = 4 \). When dealing with scientific notation, it’s great to remember that the exponent indicates how many places the decimal point was moved. For \( 35,765 \), moving the decimal from after the first '3' to after '5' means we moved it 4 places to the left – thus, \( \mathrm{a} = 4 \)!