Answer:
f(-7)=0.
f(2)=-9/5.
f(3) doesn't exist because 3 isn't in the domain of the function.
Step-by-step explanation:
is the given function.
We are asked to find:


.
f(-7) means to replace x in the expression called f with -7:
Evaluate
at 



So f(-7)=0.
f(2) means to replace x in the expression called f with 2:
Evaluate
at 



So f(2)=-9/5
f(3) means to replace x in the expression called f with 3:
Evaluate
at 


Division by 0 is not allowed so 3 is not in the domain of our function.
S = p/(q +p -pq)
q +p -pq = p/s
q -pq = p/s - p
q(1-p) = p/s - p
q = (p/s - p) / (1-p)
Answer:
Door 2
Step-by-step explanation:
To do this problem, we need to use the Pythagorean Theorem. The door is a rectangle and if we draw a line from corner to corner, we have right triangles.
To find the diagonal distance, we have to write and solve the equation below.
3^2 + 9^2 = c^2
9 + 81 = c^2
90 = c^2
c = the square root of 90
The square root of 90 can be simplified to 3 square roots of 10.