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3 years ago

ANSWER ASAP PLEASE Question #4

Computers and Technology

1 answer:

Scrat [10]3 years ago

4 0

Answer:

A cookie.

Explanation:

Click the crown at the top of this answer if this helped ;)

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The output of a combiner is normally fed into a

ankoles [38]

The output of a combiner is normally fed into a mask filter. Check more about output below.

<h3>What is output?</h3>

Output is known to be that which is gotten from the act of making of anything or the amount of a thing that is processed.

Note that he output of a combiner is normally fed into a mask filter as it is the first point of contact.

Learn more about output from

brainly.com/question/20727977

#SPJ2

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2 years ago

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How to represent derived attributes in database?

Vlad1618 [11]

Answer:

Derived attribute can be defined as a type of attribute where its value will be derived from one or more of the other attributes of the same entity set.

Explanation:

An example of derived attribute is when we have an entity set called General. The set then has attributes like [Form], [Characteristics], [Address}, (Employment No).

(Employment No) which is represented distinctly in the attribute set can be called a derived attribute if it can be derived from one or more of the other attributes.

Derived attribute can be gotten through calculating values and not storing values.

For example, let us consider the following record of Teachers records;

(‘Teacher Number’, ‘Name’, ’Date of Birth’, Age today)

(‘E105’, ‘Samson’, ’07-Dec-1990’, 0)

This record shows that the teacher Samson was born on 7th of December, 1990. At the time of record insertion, he was born and 0 years old. What will be the value of his age on ’07-Dec-2000’? It is about 10 years. It clearly shows that the value is not fixed and it is a variable whenever the DOB is adjusted.

Therefore, we are not creating our table with derived attributes in it. Instead, the values ofderived attributes can be calculated at the time of retrieval and shown to the user. Hence, the record will look like as follows;

(‘E105’, ‘Samson’, ’07-Dec-1990’)

This means that 0 is a derived attribute from the Date of birth.

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3 years ago

Setting your __________ will prevent you from having to type your name in every email.

Kay [80]

I believe its D. Signature.

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3 years ago

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Which activity is a case of identity theft?

vagabundo [1.1K]

Answer:

C, stealing someone else's personal data.

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3 years ago

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Prove whether each argument is valid or invalid. First find the form of the argument by defining predicates and expressing the h

SSSSS [86.1K]

Answer:

The given argument ∀x (S(x) ∧ (M(x) V D(x)) --> ¬ A(x)) ∧ S(Penelope) ∧ A(Penelope) -->¬ D(Penelope) is valid.

Explanation:

Solution:

Let us Consider following predicates:

M(x): x missed the class

D(x): x got a detention

S(x): x is a student in the class

A(x): x got an A

Now,

We Express the hypotheses and conclusion as:

The hypotheses: ∀x (S(x) ∧ (M(x) V D(x)) --> A(x)) and S(Penelope) and A(Penelope)

So,

The Conclusion: D(Penelope)

Thus,

The Argument:

∀x (S(x) ∧ (M(x) V D(x)) --> A(x)) ∧ S(Penelope) ∧ A(Penelope) -->D(Penelope)

Then,

The given argument is valid or correct and prove using the inference rule as follows:

Step Premises Reason (Rule used)

1. ∀x (S(x) ∧ (M(x) V D(x)) --> A(x)) Premise

2. S(Penelope) ∧ (M(Penelope)

V D(Penelope)) --> ¬ A(Penelope) Universal instantiation

3. S(Penelope) Premise

4. A(Penelope) Premise

5. ¬[S(Penelope) ∧ (M(Penelope)

V D(Penelope))] 2,4, Modus Tollens

6. ¬S(Penelope) V (¬M(Penelope)

∧ ¬D(Penelope)) De Morgan law

7.¬M(Penelope) ∧ ¬D(Penelope) 3,6,Disjunctive Syllogism

8¬D(Penelope) 7, Simplification

Therefore, the given argument ∀x (S(x) ∧ (M(x) V D(x)) --> ¬ A(x)) ∧ S(Penelope) ∧ A(Penelope) -->¬ D(Penelope) is valid.

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4 years ago

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