The hexadecimal number A53-8 is equivalent to

To convert the hexadecimal number A53.8 to its decimal equivalent, we calculate the sum of each digit multiplied by its corresponding power of 16:

• A (which represents 10 in decimal) × 16² = 10 × 256 = 2560
• 5 × 16¹ = 5 × 16 = 80
• 3 × 16⁰ = 3 × 1 = 3
• 8 × 16^-1 = 8/16 = 0.5

Adding these components together: 2560 + 80 + 3 + 0.5 = 2643.5.

In the provided options, the hyphen '-' is used in place of a decimal point. Thus, 2643.5 is represented as 2643-5. Options A, C, and D do not match the calculated value.