8. Assume the structure of the IEEE-20 bits floating-point pattern is as follows: A sign bit, 4 bits for the exponent part and 15 bit for the fraction part. The exponent part is calculated using excess-8. Code the decimal +((5.5)10 as IEEE-20 bits binary floating-point pattern. (a) CE000 (b) A5000 (c) 53000 (d) B8000 9. Calculate the following operation, assuming 4-bit signed binary numbers in 2's complement: (4)+(3) (a) 1001 (b) 1100 (c) overflow (d) 0111 10. Let x=(101001.010)2y=(10010.1)2 Calculate the value of xy (a) 100001.01 (b) 1010.01 (c) 0110101.01 (d) 010110.110