Answer:
D)4x + 6/(x + 1)(x - 1)
Step-by-step explanation:
A field is basically a rectangle, so to find the perimeter of our field we are using the formula for the perimeter of a rectangle
where
is the perimeter
is the length
is the width
We know from our problem that the field has length 2/x + 1 and width 5/x^2 -1, so 
and 
.
Replacing values:
Notice that the denominator of the second fraction is a difference of squares, so we can factor it using the formula 
where 
is the first term and 
is the second term. We can infer that 
and 
. So, 
. Replacing that:
We can see that the common denominator of our fractions is 
. Now we can simplify our fraction using the common denominator:
We can conclude that the perimeter of the field is D)4x + 6/(x + 1)(x - 1).
Answer:
An unknown variable
Step-by-step explanation:
r is an unknown variable -> the equation is used to solve for it.
Answer:
d. (75 / 100) * 100
Step-by-step explanation:
Pathogen is best described as cross contaminant which a bacteria or a virus that causes infection or disease in human. The lab tests confirms that total percentage of attendees who are infected by the disease is 75%. The total attendees were 100 out of which 75 had been infected and 50 demonstrated symptoms of the illness.
You are adding 6 to each number. (N-1)+6, I guess
