Answer :
Given:
[tex]-5x^4-6x^9+x-30[/tex]To determine the degree and the leading coefficient, we first note that the degree is the highest power/exponent of the variable, while the leading coefficient is the number in front of the variable with the highest power/exponent.
Based on the given polynomial, the highest exponent is 9. Hence, the degree is 9 and the leading coefficient is -6.
Therefore, the answers are:
degree:9
leading coefficient: -6