Why do we want cryptographic hash functions in Bitcoin?
Or any blockchain system for that matter?

Match the vocabulary word to the correct definition. 1. human resources department 2. job description 3. ethics 4. labor relations 5. occupational safety & health administration a. a detailed list of the functions and requirements for a position b. the exchange between the employer and employee c. principles that define appropriate conduct d. the government agency responsible for monitoring safety in the workplace e. the division of a business responsible for hiring, managing,maintaining, and firing the workforce

Arnold rossiter is a 40-year-old employee of the barrington company who will retire at age 60 and expects to live to age 75. the firm has promised a retirement income of $20,000 at the end of each year following retirement until death. the firm's pension fund is expected to earn 7 percent annually on its assets and the firm uses 7% to discount pension benefits. what is barrington's annual pension contribution to the nearest dollar for mr. rossiter? (assume certainty and end-of-year cash flows.)

Ajax corp's sales last year were $435,000, its operating costs were $362,500, and its interest charges were $12,500. what was the firm's times-interest-earned (tie) ratio? a. 4.72b. 4.97c. 5.23d. 5.51e. 5.80