What is the value of the expression 1/2 (m-4) n A. 1/2 B. 1 C. 2 D. 7/2 plz give explination

1

Step-by-step explanation:

1/2 (m-4) n

Let m = 12 and n = 1/4

1/2 (12-4) 1/4

PEMDAS says parentheses first

1/2 *  8*1/4

Then multiply from left to right

4 * 1/4

1

B. 1

Step-by-step explanation:

We are given the expression

1/2(m-4) *n

We also know that m=12 and n=1/4. Therefore, we can substitute 12 in for m and 1/4 in for n.

1/2(12-4) *1/4

Solve according to PEMDAS.

First solve inside the parentheses. Subtract 4 from 12.

1/2(8) *1/4

Multiply from left to right.

First,, multiply 1/2 and 8. Multiplying by 1/2 is the same as dividing by 2.

1/2*8=4

8/2=4

4*1/4

Next, multiply 4 and 1/4.

4/1* 1/4

= 4/4

=1

Therefore, the correct answer is B. 1

5

step-by-step explanation: