In the expressions,
- a and b are rational numbers.
- x and y are irrational numbers.
Select an answer from the options below and click Submit.
Question 1
Indicate whether the following expression is always rational, sometimes rational or never rational.
a+b
Answer: Correct! Go to question 2.
Answer: Incorrect. The answer is A. Go to question 2.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 2
Indicate whether the following expression is always rational, sometimes rational or never rational.
a+x
Answer: Correct! Go to question 3.
Answer: Incorrect. The answer is C. Go to question 3.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 3
Indicate whether the following expression is always rational, sometimes rational or never rational.
ab
a times b
Answer: Correct! Go to question 4.
Answer: Incorrect. The answer is A. Go to question 4.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 4
Indicate whether the following expression is always rational, sometimes rational or never rational.
xy
Answer: Correct! Go to question 5.
Answer: Incorrect. The answer is B. Go to question 5.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 5
Indicate whether the following expression is always rational, sometimes rational or never rational.
x2
x squared
Answer: Correct! Go to question 6.
Answer: Incorrect. The answer is B. Go to question 6.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 6
Indicate whether the following expression is always rational, sometimes rational or never rational.
x+y
Answer: Correct! Go to question 7.
Answer: Incorrect. The answer is C. Go to question 7.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 7
Indicate whether the following expression is always rational, sometimes rational or never rational.
b2
b squared
Answer: Correct! Go to question 8.
Answer: Incorrect. The answer is A. Go to question 8.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.
Question 8
Indicate whether the following expression is always rational, sometimes rational or never rational.
ay
a times y
Answer: Correct!
Answer: Incorrect. The answer is C.
Answer:Incorrect. Remember, a rational number is any number that can be written as one integer divided by another integer. Try again.