Algebra II : Mathematical Relationships and Basic Graphs

Study concepts, example questions & explanations for Algebra II

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Example Questions

Example Question #61 : Factorials

Divide:  

Possible Answers:

Correct answer:

Explanation:

In order to simplify the factorials, expand all the terms first.  

Simplify the numerator and denominator.

The answer is:  

Example Question #2871 : Algebra Ii

Multiply:   

Possible Answers:

Correct answer:

Explanation:

Evaluate by expanding the factorial in the parentheses.  The zero factorial is a special case which equals to one.

The answer is:  

Example Question #68 : Factorials

Divide:  

Possible Answers:

Correct answer:

Explanation:

Evaluate by expanding the terms of the factorials.

Cancel out the common terms in the first fraction.

Change the division sign to a multiplication and take the reciprocal of the second quantity.

The answer is:  

Example Question #69 : Factorials

Solve:  

Possible Answers:

Correct answer:

Explanation:

Evaluate the terms in the parentheses first.

Expand the factorials.

The fraction, after simplifying all the terms, becomes:

The answer is:  

Example Question #212 : Mathematical Relationships And Basic Graphs

Solve the factorials:  

Possible Answers:

Correct answer:

Explanation:

Simplify the terms in parentheses first.

Evaluate each factorial by writing out the terms.

Simplify the parentheses.

Simplify all the common terms.

The answer is:  

Example Question #71 : Factorials

Try without a calculator.

True or false: 

Possible Answers:

False

True

Correct answer:

False

Explanation:

It is not necessary - and in fact, without a calculator, it is inconvenient - to calculate  to determine whether this is true or false. 

 - or  factorial - is defined to be the product of the integers from 1 to . Therefore, 

 

If we continue to look at factorials, we can see that 

It can already be seen that  and all higher factorials will be greater than , so it follows that the statement  is false.

Example Question #2872 : Algebra Ii

Simplify the expression. 

Possible Answers:

Correct answer:

Explanation:

By expanding the factorials and the powers it is a lot easier to see what terms will cancel.

In this example everything in the denominator cancels leaving a 6,7,x, and y in the numerator.

Example Question #73 : Factorials

Try without a calculator.

Which expression is equal to  ?

Possible Answers:

None of these

Correct answer:

Explanation:

 - or  factorial - is defined to be the product of the integers from 1 to . Therefore,

and

Therefore, 

is equal to 

All of the factors from 1 to 999 can be canceled out in both numerator and denominator, so the expression is equal to

Example Question #72 : Factorials

What is the value of  ? 

Possible Answers:

12

4

6

10

24

Correct answer:

24

Explanation:

! is the symbol for factorial, which means the product of the whole numbers less than the given number. 

Thus,

Example Question #1 : Other Factorials

What is the value of ?

Possible Answers:

None of the other answers are correct.

Correct answer:

Explanation:

Since the factorial has the property

we can write  as:

 .

Thus, our expression can be written as

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