Let's do the math, 2.5+2.5+2.5+2.5( 4times) is 10hrs+2.5= 12.5hrs
Answer:
What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°
Step-by-step explanation:
What is the smallest angle of rotational symmetry for the regular octagon?
What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°vWhat is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°What is the smallest angle of rotational symmetry for the regular octagon?
°
°
Answer:
x=4± 5sqrt(2)
Step-by-step explanation:
x^2 – 8x – 34 = 0
To complete the square Add 34 to each side
x^2 -8x -34+34=0+ 34
Take the coefficient of x, and divide by 2
-8/2 =-4
Then square it and add it to each side
(-4)^2 =16
x^2 – 8x +16 = 34+16
x^2 – 8x +16 = 50
We replace the left side with (x + the coefficient of x/2)^2
(x -4)^2=50
Take the square root of each side
sqrt((x -4)^2)=±sqrt(50)
x-4 = ±sqrt(25*2)
x-4 = ±sqrt(25)*sqrt(2)
x-4 = ±5sqrt(2)
Add 4 to each side
x=4± 5sqrt(2)
