Answer:
Tom is incorrect.
Step-by-step explanation:
A square by definition implies that all sides of the square are the same measurements. In the case of finding the area, A = s². Tom, however, solved it as A = 2s.
In this case:
Area of square = s² = 11² = 121 ft²
121 ft² is the correct measurement.
~
Answer:
99%, because as the level of confidence increases, Zc increases.
Step-by-step explanation:
Refer to the attached file
For your understanding,I am sending this too so that u can understand the concept
The first step to solve this problem is to convert the first mixed number to an improper fraction.

÷ 3 +

Dividing is equivalent to multiplying with the reciprocal value,, so next you will need to change the signs.

x

+

Multiply the fractions

+

Finally,, add the two fractions together to get your final answer

This means that the correct answer to your question is

.
Let me know if you have any further questions
:)