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Elanso [62]
3 years ago
8

In many supermarkets customers can pay for their shopping using credit cards. (a) Name two items of information stored on the ma

gnetic stripe on these cards. (b) State two ways that the supermarket computer would check the credit card.
Computers and Technology
1 answer:
slamgirl [31]3 years ago
7 0

Answer:

Explanation:

Two items on the magnetic strip are, Credit Card info and Balance

Two ways supermarket may check are the PIN pad you are using to pay or their reciept system.

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To print the last element in the array named ar, you can write :A. System.out.println(ar.length);
timofeeve [1]

Answer:

Option (d) is the correct answer.

Explanation:

An Array is used to store multiple variables in the memory in the continuous memory allocation on which starting index value is starting from 0 and the last index value location is size-1.

In java programming language the array.length is used to tells the size of the array so when the user wants to get the value of the last element, he needs to print the value of (array.length-1) location so the correct statement for the java programming language is to print the last element in the array named ar is--

System.out.println(ar[ar.length-1]);

No option provides the above statement, so option d (None of these) is correct while the reason behind the other option is not correct is as follows--

  • Option a will prints the size of the array.
  • Option b also gives the error because length is an undeclared variable.
  • Option c will give the error of array bound of an exception because it begs the value of the size+1 element of the array.
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3 years ago
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Nookie1986 [14]

Answer:

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. Why use a sensitivity analysis?
Natali [406]

Answer:

 Sensitivity analysis is the method in which it basically predict the final outcome of the decision. It analysis each variable individually and identify the dependency of the output value on the particular value of the input.  

The advantage of the sensitivity analysis is that it reduce the overall risk of the particular strategy and also impact of the system.

It basically work on the basic principle that firstly changed the structure and model and then observe the particular behavior of the model.

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What do you call an optical instrument used for viewing small objects
devlian [24]
An optical instrument used for viewing small objects is a microscope
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Answer:

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Explanation:

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