Answer:
Following are the solution to the given question:
Step-by-step explanation:
In question a:
is a perfect square.
is not a perfect square
In question b:
, not a perfect square.
is a perfect square
.
is a perfect square
.
is not a perfect square, its nearest perfect square is
is a perfect square
.
is a perfect square
.
is a perfect square
.
The question is related to trigonometric ratio rule .
In the given diagram, there is a right angle triangle, with adjacent =57, and the unknown side is y. Given angle measurement is 39 .
To find the measurement of y, we will use tan rule which is


y = 57 tan 39 = 46.2
To find the answer, use this equation:
65 + 45 + x = 180
Simplify:
110 + x = 180
Subtract:
x = 70
Your unknown interior is 70
Hope this helps!! :)
Answer is B. 2.19/Ib (just divide 4 by 8.76)
Standard error (SE)

Or

Therefore, SE of the mean = (8)/(2) =4