The answers are as follows; .275,.225, 2, .30
Your are being asked to find what value of a will result in the denominator being 0, since you can not divide by 0 then this will be your non permissible value. Simply take the denominator(after it has been factored down and reduced, if necessary, it's not in this question though) then set to 0 and solve for the variable.



Therefore your non permissible value will be,
a ≠ 0
Answer:
Infinitely many solutions
Step-by-step explanation:
3x - 9 = 3(x - 3)
Distribute;
3x - 9 = 3x - 9
Infinitely many solutions
theta is in the fourth quadrant where the cosine is positive.
the third side in the triangle = sqrt (4 - 2) = sqrt2
So sin theta = -sqrt2/2 = Second choice (negative because sine is negative in 4th quadrant)
tan theta = - sqrt2 / sqrt2 = -1