<h3>
Answer:</h3>
x² -6x = -13 ⇒ x ∈ {3-2i, 2+2i}
<h3>
Step-by-step explanation:</h3>
To make a=1, divide the equation by the coefficient of x², which is 8.
... x² -6x = -13 . . . . . . your blanks are filled with -6 and -13
Now, to complete the square, add the square of half the x-coefficient:
... (-6/2)² = 9.
... x² -6x +9 = -4 . . . 9 added to both sides
... (x -3)² = -4 . . . . . rewrite as a square
... x -3 = ±2i . . . . . . take the square root
... x = 3 ±2i . . . . . . . add 3
The solutions are the complex numbers x = 3 ±2i.
Step-by-step explanation:
length of half circumference EFG=15
BC=8
the perimeter=57
the are=35square
Answer: x = 20 degree
3x = 3×20 which is 60 degree
And the other one is 100 degree
Add all the number 100+60+20 degree is 180 degree
Answer:
Dale played 2 hours and 30 minutes in total.
Step-by-step explanation:
If one game lasts 5/8 hours, and Dale plays 4 games, that means that you have multiply the amount of hours per the amount of games he plays.
Therefore, you should do 4 x 5/8 which equals 20/8.
However, it is recommended to simplify your answer so really you should get 2 hours and 30 minutes.
