Final answer:
A fraction with a decimal value between 1/2 and 3/4 is 2/3, which is approximately 0.6667.
Step-by-step explanation:
To write a fraction with a decimal value between 1/2 and 3/4, we can choose any fraction whose decimal value is greater than 0.5 and less than 0.75.
One such fraction is 2/3.
To convert this fraction into a decimal, divide the numerator (2) by the denominator (3).
The decimal value of 2/3 is approximately 0.6667.