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iris [78.8K]
3 years ago
14

By issuing concert tickets on the blockchain, fans can verify transfer of ownership from one digital wallet to another, rather t

han worrying whether the PDF (or paper) ticket they received was sold to 10 other people. This is an example of how blockchain solves the problem. a) inflation b) double-cross c) double-spend d) benchmark
Computers and Technology
1 answer:
alekssr [168]3 years ago
5 0

Answer:

c) double-spend

Explanation:

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WHERE DO I GO TO DO THIS AND WHAT DO I WRITE?????
faust18 [17]

You can just look up "python ide online" on google and paste this code:

n = -1

count = 0

while n < 0:

   n = int(input("We're checking to see if a number is prime or not! Enter a positive number: "))

if n % 2 == 0:

   if n == 2:

       print("{} is a prime number".format(n))

   else:

       print("{} is not a prime number".format(n))

else:

   for x in range(n, 1, -1):

       if n % x == 0:

           count += 1

   if count > 1 or n == 1:

       print("{} is not a prime number".format(n))

   else:

       print("{} is a prime number".format(n))

I've written some code that checks to see if a number entered by the user is a prime number or not.

Sorry, but I'm not too good with pseudocode plans and all that. I hope this helps.

8 0
3 years ago
Read 2 more answers
which of these is a placeholder in a document into which variable data is inserted during the process of a mail merge?
Margarita [4]

Answer: C. Merge Field.

The Merge Field is a placeholder that holds the variable data that will be inserted into the main document during a mail merge procedure. The columns in a document may represent the categories of information. The Rows represent the records of the different columns. The computer counts a row of data to be a single record.

7 0
3 years ago
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The relational algebra expressions can be rearranged and achieve the same result but with a better processing time. A selection
BigorU [14]

Answer:

c. This would reduce the number of tuples to involve in the join resulting in a more efficient query.

Explanation:

SQL or structured query language is a database querying language used to communicate or interact with databases. A database query could be as simple as returning all the columns from a database table to complex like joining several query results which in turn forms an algebra expression.

Every query statement or expression is executed with time, execution time needs to be minimized for efficiency, so, a well-arranged and reduced joining in the query improves the efficiency of the query.

8 0
3 years ago
Can anybody answer these please hurry
lina2011 [118]
Answer:
All of the above

Explanation:
Their size was very HUGE; While the computers were very EXPENSIVE to operate and used a great proportion of ELECTRICITY it caused the computers to generate a lot of HEAT which would cause the MALFUNCTIONS.
3 0
3 years ago
Marie uses a browser to visit a blog. How is the blog uniquely identified?
Andreyy89

Answer:

URL

Explanation:

Uniform Resource Locator

5 0
3 years ago
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