Question

0.1m+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

0.1m+8−12n=8

When m=30 and n=¼

Explanation:

We are required to evaluate the mathematical expression

0.1m+8−12n

When m=30 and n=¼.

To do this, we simply substitute the values of m and n into the expression and solve it.

0.1m+8−12n

=[0.1X30]+8−[12X¼]

=3+8-3=8

Therefore:

0.1m+8−12n=8

When m=30 and n=¼