Question

Evaluate 0.1m+8-12n0.1m+8−12n0, point, 1, m, plus, 8, minus, 12, n when m=30m=30m, equals, 30 and n=\dfrac14n= 4 1 ​ n, equals, start fraction, 1, divided by, 4, end fraction

Answer 1

8

Explanation:

We are required to evaluate:

0.1m+8-12n

When
`m=30, n=(1)/(4)`

Substituting these values into the expression, we have:

`0.1m+8-12n=0.1(30)+8-12((1)/(4))\\=3+8-(12)/(4)\\=3+8-3\\=8`