Answer:
The value of the expression at given values of m and n is 8.
Step-by-step explanation:
We have been given that
[tex]0.1m+8-12n\\\\m=30,n=\dfrac{1}{4}[/tex]
On substituting the values of m and n in the given expression
[tex]0.1\cdot30+8-12\cdot\dfrac{1}{4}\\\\\mathrm{Multiply\:the\:numbers:}\:0.1\cdot \:30=3\\\\3+8-\dfrac{1}{4}\\\\\text{On simplifying, we get}\\\\3+8-3\\\\\=8[/tex]
Thus, the value of the expression at given values of m and n is 8.
