Answer:
(C)The square root of terms separated by addition and subtraction cannot be calculated individually.
Step-by-step explanation:
In Step 7:

The expression
cannot be written as
. This is as a result of the fact that square roots of terms separated by addition and subtraction cannot be calculated individually.
Take these examples:

You subtract polynomials by combining like terms first
Answer:
40% less
Step-by-step explanation:
12 lb is 8 lb less than 20 lb.
-8 lb
----------- = -0.4
20 lb
Multiplying this result by 100%, we get -40%.
This year's turkey was 40% less than last year's.
Answer:
n = 19.2
Step-by-step explanation:
12 / 5 = n / 8
n = 12 * 8 / 5
n = 96 / 5
n = 19.2
Area=length times width
area=28
length=7
28=7 times width
divide both sides by 7
4=width
the width is 4 miles
and perimiter is 22mi