Yes, it is a rational number.
Answer:

We can factorise the numerator with the difference of squares formula:
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Now we can factorise the denominator:


Cancel out the common factor of (p-5):

Answer:
43in
Step-by-step explanation:
Perimeter = sum of the sides
Perimeter = 11 + 10 + 10 + 12 = 43
Answer:

Step-by-step explanation:
Use the distance formula.




