The answer is 6 as unit digit of number is 4 when you square you will get the unit digit 6
Answer: He rides for 2.5 hours or 2 and a half hours.
Step-by-step explanation:
He needs to complete a trajectory of 22.5 kilometers.
He rides 9 kilometers per hour.
Divide the total by the amount of kilometers that he rides.

First, multiply. 7x-14-4x+9. Now, add the like terms. 3x-5.