Which of the following pairs of expressions could represent consecutive odd numbers?
2 answers:
Answer: The correct option is
(B) n and n + 2.
Step-by-step explanation: We are given to select the correct pair of expressions that could represent consecutive odd numbers.
Let n and m be two consecutive odd numbers.
We know that
the difference between two consecutive odd numbers is 2.
So, we must have
Therefore, if n is one odd number, then the next odd number is (n + 2).
Thus, n and n + 2 represents the pair of consecutive odd numbers.
(B) is the correct option.
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Answer: Total cost is $1.75
Explanation:
Since we have given that
Number of postcards bought by Doug's family= 7
Cost of each postcard including tax = $0.25
Total cost is given by
Now, we want to show this in number line :
On the number line put all the number with a difference of 0.25 and run the number line seven times and we get the answer.
Each step is of length 0.25 and there are 7 jumps to reach required answer.
So, after 7 jumps we reach at 1.75 which is the required answer.
Hence total cost is $1.75
