Consider the following code example: SELECT vendor_state, vendor_city, vendor_name, COUNT(*) AS invoice_qty, SUM(invoice_total) AS invoice_average FROM invoices JOIN vendors ON invoices. vendor_id = vendors. vendor_id WHERE vendor_state < 'e' GROUP BY vendor_state, vendor_city, vendor_name HAVING SUM(invoice_total) > 500 ORDER BY vendor_state, vendor_city, vendor_name Although this query runs as coded, it contains this logical error:

Which parts of a presentation should be the most general? a. introduction and conclusion b. introduction and outline c. outline and conclusion d. outline and body

The idea that, for each pair of devices v and w, there’s a strict dichotomy between being “in range” or “out of range” is a simplified abstraction. more accurately, there’s a power decay function f (·) that specifies, for a pair of devices at distance δ, the signal strength f(δ) that they’ll be able to achieve on their wireless connection. (we’ll assume that f (δ) decreases with increasing δ.) we might want to build this into our notion of back-up sets as follows: among the k devices in the back-up set of v, there should be at least one that can be reached with very high signal strength, at least one other that can be reached with moderately high signal strength, and so forth. more concretely, we have values p1 ≥ p2 ≥ . . ≥ pk, so that if the back-up set for v consists of devices at distances d1≤d2≤≤dk,thenweshouldhavef(dj)≥pj foreachj. give an algorithm that determines whether it is possible to choose a back-up set for each device subject to this more detailed condition, still requiring that no device should appear in the back-up set of more than b other devices. again, the algorithm should output the back-up sets themselves, provided they can be found.\

All of the following are benefits of automation except1. it reduces costs2. it improves precision 3. it eliminate human error4. it increases the number of employees stoichiometry is the same regardless of which two elements are being examined1. true2. falsewhat problem does chlorofluorocarbon create1. it causes lead poisoning 2. it causes great damage to the ozone layer3. it leaks into food as it cools the air on refrigerators4. it is responsible for most of the pollution created by automobilesa closed loop system is more sophisticated than an open loop system1. true2. false