Answer:
Because square root is essentially the same thing as the power to a half
sqrt(x) is the same as (x)^1/2
Answer:
x = -1 or x = -7
Step-by-step explanation:
y = (x + 4)^2 - 9
To find x-intercept, set y = 0
=> (x + 4)^2 - 9 = 0
=> ( x + 1)( x + 7) = 0
=> x = -1 or x = -7
Divide by -2: 3x-5 < -17
Add 5: 3x < -12
Divide by 3: x < -4 (answer)
General Idea:
The measure of one of the central angles of a regular Polygon (
) can be used using the below formula:
![\theta= \frac{360^{\circ}}{n} \\\\Where: \\\; n\; is\; number\; of\; sides\; of\; regular\; polygon](https://tex.z-dn.net/?f=%20%5Ctheta%3D%20%20%5Cfrac%7B360%5E%7B%5Ccirc%7D%7D%7Bn%7D%20%20%20%20%5C%5C%5C%5CWhere%3A%20%5C%5C%5C%3B%20n%5C%3B%20is%5C%3B%20number%5C%3B%20of%5C%3B%20sides%5C%3B%20of%5C%3B%20regular%5C%3B%20polygon%20)
Applying the concept:
The measure of one of the central angles of a regular octagon.
The octagon have 8 sides, using the above formula we get...
![\theta= \frac{360}{n} \\\\\theta = \frac{360}{8} = 45^{\circ}](https://tex.z-dn.net/?f=%20%5Ctheta%3D%20%5Cfrac%7B360%7D%7Bn%7D%20%5C%5C%5C%5C%5Ctheta%20%3D%20%5Cfrac%7B360%7D%7B8%7D%20%3D%2045%5E%7B%5Ccirc%7D%20%20%20)
Conclusion:
The correct option is <em><u>A) 45 degrees</u></em>