They hiked more on the 2nd day because they are retracing their steps.
Answer:
11<em>i</em>
Step-by-step explanation:
first you have to get a postive root.

then you solve the square roots from there, keeping in mind the imaginary number answer to the square root of -1, <em>i</em>.

Answer:
Since 7 and 11 are both rational the sum and the difference are rational .
Step-by-step explanation: