Substituting y = -1 2/3 into the expression -2.5y^0 results in -2.5. The evaluation involves recognizing that any non-zero number raised to the power of 0 is 1, leading to a straightforward simplification of the expression.
To find the value of the expression -2.5y^0 for y = -1 2/3, we substitute the given value into the expression. Since any non-zero number raised to the power of 0 is 1, the expression simplifies as follows:
-2.5y^0 = -2.5 * 1 = -2.5
Therefore, when y is replaced with -1 2/3, the expression -2.5y^0 evaluates to -2.5.
In detail, when y = -1 2/3, the expression becomes:
-2.5 * (-1 2/3)^0
Since any number raised to the power of 0 is 1, the expression further simplifies to:
-2.5 * 1 = -2.5
Thus, the final value of the expression is -2.5.