To determine if a line is perpendicular to another, you must first determine the slope...
m = y1-y2/x1-x2
m of FK = 3-5/3-6 = -2/-3 = 2/3
m of FJ = 3-2/3-8 = 1/-5
m of FL = 3-0/3-5 = 3/-2
m of KJ = 5-2/6-8 = 3/-2
m of KL = 5-0/6-5 = 5
m of JL = 2-0/ 8-5 = 2/3
In order for two lines to be perpendicular, their slopes must be opposite reciprocals...
FK is perpendicular to FL
FK is perpendicular to KJ
JL is perpendicular to FL
JL is perpendicular to KJ
FJ is perpendicular to KL
Answer: It would be 6 inches wide.
Step-by-step explanation: Well two thirds of 12 in. is 8in. So two thirds of 9in. would be 6 inches.
f(3) = 1.9
Solution:
Given function:
To find f(3):
Substitute x = 3 in the given function.
Let us first simplify 
.
Apply exponent rule: 
The value of 
. (using calculator)
Substitute this value in f(3).
f(3) = 1.9
Hence the value of f(3) is 1.9.
The answer is 30, hope this helps.
