please solve all prt of the question

please solve only 5c and 6

5. [15 points] Given a 8-bit binary number 10110110 wo (I will call it number N) a. What is the decimal value if N is an 8-bit signed number? b. What is the decimal value if N is an 8-bit unsigned number? c. If N is a signed integer, what is it's negation in both binary and Hex? 6. [10 points] Given decimal number (-0.46875) or (-15/32), convert it to single precision Floating point number. The result should be converted to HEX