Consider the three transactions t1, t2, and t3, and the schedules s1 and s2 given below.

draw the serializability (precedence) graphs for s1 and s2, and state whether each schedule is serializable or not.

if a schedule is serializable, write down the equivalent serial schedule(s).

t1: r1 (x); r1 (z); w1 (x);

t2: r2 (z); r2 (y); w2 (z); w2 (y);

t3: r3 (x); r3 (y); w3 (y);

s1: r1 (x); r2 (z); r1 (z); r3 (x); r3 (y); w1 (x); w3 (y); r2 (y); w2 (z); w2 (y);

s2: r1 (x); r2 (z); r3 (x); r1 (z); r2 (y); r3 (y); w1 (x); w2 (z); w3 (y); w2 (y);

At a small store, a customer enters the front door on average every 8 minutes. a prior study indicated that the time between customers entering the front door during weekdays follows an exponential distribution. what is the probability that the time between customers entering the store on a weekday will be less than or equal to 7? select one: a. 62 b. 43 c. 1/8 d. 7/8 e. 58

mary's baskets company expects to manufacture and sell 30,000 baskets in 2019 for $5 each. there are 4,000 baskets in beginning finished goods inventory with target ending inventory of 4,000 baskets. the company keeps no work-in-process inventory. what amount of sales revenue will be reported on the 2019 budgeted income statement?

Companies hd and ld are both profitable, and they have the same total assets (ta), total invested capital, sales (s), return on assets (roa), and profit margin (pm). both firms finance using only debt and common equity. however, company hd has the higher total debt to total capital ratio. which of the following statements is correct? a) company hd has a higher assets turnover than company ld. b) company hd has a higher return on equity than company ld. c) none of the other statements are correct because the information provided on the question is not enough. d) company hd has lower total assets turnover than company ld. e) company hd has a lower operating income (ebit) than company ld