Answer:
11<em>i</em>
Step-by-step explanation:
first you have to get a postive root.

then you solve the square roots from there, keeping in mind the imaginary number answer to the square root of -1, <em>i</em>.

The answer is 515. Because 5×103 is 515
Answer:
C = 10(pi) yards
A = 25(pi) yards
Step-by-step explanation:
Answer:
x=.4
Step-by-step explanation:
Answer:

Step-by-step explanation:
For the function to have a domain of all reals, the denominator cannot have a value of zero. x^2 + 2cx + 14 will not have zero as a root if it has no real solutions. A quadratic equation has no solutions when the discriminant is negative.
b^2 - 4ac < 0
(2c)^2 - 4(1)(14) < 0
4c^2 - 56 < 0
4c^2 < 56
c^2 < 14
