Question

3d - 4
d = 1.2

Explanation:

Step1: Substitute d = 1.2 into 3d - 4

We replace \( d \) with \( 1.2 \) in the expression \( 3d - 4 \), so we get \( 3\times1.2 - 4 \).

Step2: Calculate 3×1.2

First, calculate \( 3\times1.2 = 3.6 \).

Step3: Subtract 4 from 3.6

Then, subtract 4 from 3.6: \( 3.6 - 4 = -0.4 \).

Answer:

\(-0.4\)