Suppose that alice and bob use the following protocol to check if they store the same secret. 1. alice generates a random n-bit value r. 2. alice computes x = ka ⊕ r, and sends x to bob. 3. bob computes y = kb ⊕ x and sends y to alice. 4. alice compares r and y. if r = y , she concludes that ka = kb—that is, alice and bob share a secret key. does the above protocol satisfy the two security properties identified in question (1)?

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

Write the fraction or mixed number and the decimal shown by the model