Answer:
The third one
Step-by-step explanation:
The equation for a circle is 
(h, k) is the center
Answer:
<em>4x² - 24x + 20 = 0 </em>
Step-by-step explanation:
a(1)² + b(1) + 20 = 0
a(5)² + b(5) + 20 = 0
a + b = - 20 ⇒ b = - a - 20 ...... (1)
25a + 5b = - 20 .......... (2)
(1) -----> (2)
25a + 5( - a - 20) = - 20
20a - 100 = - 20 ⇒ a = 4
4 + b = - 20 ⇒ b = - 24
<em>4x² - 24x + 20 = 0</em>
Answer:
1/3) or 0.3333) or 3)
Step-by-step explanation:
The length of all sides of A', B', and C' are 3 times bigger than A, B, and C.
For example:
The length of side A' and B' is 3 units, and the length of A and B is 1. # is 3 times bigger than 1.
The sum of the interior angles of a polygon with n sides is
180(n-2)
A regular octagon has n = 8 (8 equal sides).
The sum of the interior angles is
180*(8 - 2) = 1080°
Because we have a regular octagon, each interior angle is
1080/8 = 135°
The sum of the angles on one side of a straight line is 180°. Therefore the measure of an exterior angle of the regular octagon is 180 - 135 = 45°
Answer: 45°
