The answer would be 2 because a square root has to be the same 2 numbers which is 2 for this example. 2x2=4. Hope this helps! If you have anymore questions please ask me. Stay Safe! And have a good day!
Answer: I believe your answer is C.
The circle equation is in the format (x – h)2 + (y – k)2= r2, with the center being at the point (h, k) and the radius being "r".
x²+y²-8x-6y+2 =0 -----(a)
(x-4)² = x² - 8x + 16
(y-3)² = y² - 6y + 9
Equation (a) can be rewritten as:
(x-4)² + (y-3)² + 2 - 16 - 9 = 0
(x-4)² + (y-3)² = 23
The coordinates for the center of the circle is: ( 4,3)
The radius is √23=4.8
Answer:
Step-by-step explanation:
You are given an angle, the adjacent side to the angle, and need the hypotenuse of the triangle. Use Cos x to find the missing side.
Cos α = (adjacent side)/(hypotenuse)
Cos 45 = 10/x
x(Cos 45) = 10 (multiply both sides by x to get rid of the fraction)
x = 10/(Cos 45) (divide both sides by Cos 45 to isolate x
Cos 45 = (√2)/2 so we have...
x = 10/[(√2)/2]
now simplify...
x = 10*(2/√2)
x = 20/√2
x = (20√2)/[(√2)(√2)
x = (20√2)/2
x = 10√2
or x = 14.1421 if you use a calculator
