Answer:
The value of the given expression is -4.5
Explanation:
We need to find the value of the expression
when s=2 and t=1.5
Putting the values of s and t in the given expression.
So,
![-3|5-s^3|+3t=-3|5-(2)^3|+3* 1.5\\\\=-3|5-8|+4.5\\\\=-3|-3|+4.5](https://img.qammunity.org/2021/formulas/mathematics/high-school/ocsiumehtrlvljg8qric2x1bx69aoybehe.png)
We know that, |-a|=a
So,
![=-3|-3|+4.5\\\\=-3(3)+4.5\\\\=-9+4.5\\\\=-4.5](https://img.qammunity.org/2021/formulas/mathematics/high-school/8femispca2odf494z3089toh3z07aey90k.png)
So, the value of the given expression is -4.5