Answer:
(3/4)*(1/5) is equal to 0.15
It is correct to say d=2r?
Is it possible you mean d=r•r. Because that is incorrect.
Answer: 128 degrees
Explanation:
Using the interior angles formula, 180(n-2), where n is the number of sides, we can determine that the interior angles must add up to 180(3) or 540. Therefore, 98+104+120+90+x=540
Simplify:
412+x=540
x=128
Your f(x)=sqrt[x+8]/(x+4)(x-6) is MUCH clearer, but not 100% clear. I will assume that your denominator here is the product of (x+4) and (x-6):
√x+8)
f(x) = ------------------
(x+4)(x-6)
We cannot divide by zero. Thus, x cannot be -4 and cannot be 6.
Thus, the domain is:
(-infinity, -4) or (-4, 6) or (6, infinity).