Final answer:
To evaluate [-a (-b)], we can substitute the given values for a and b. The expression simplifies to 21.92555.
Step-by-step explanation:
Evaluating expressions involves substituting specific values for the variables in the expression and performing the indicated operations. Expressions are mathematical phrases that may contain variables, constants, and operators.
To evaluate [-a (-b)], we can substitute the given values for a and b. Given that a = 6.05 and b = 3.611, the expression becomes [-6.05 (-3.611)]. When we multiply a negative number by another negative number, the result is a positive number. Therefore, [-a (-b)] = 6.05 (3.611) = 21.92555.