Answer:
centre = (2, - 1), radius = 6
Step-by-step explanation:
Rearrange the equation by placing the x and y terms together and adding 31 to both sides
Given
x² + y² - 4x + 2y - 31 = 0, then
x² - 4x + y² + 2y = 31
Use the method of completing the square
add ( half the coefficient of the x/y term )² to both sides
x² + 2(- 2)x + 4 + y² + 2(1)y + 1 = 31 + 4 + 1
(x - 2)² + (y + 1)² = 36
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r the radius
compare to (x - 2)² + (y + 1)² = 36, then
centre = (2, - 1) and r = 
= 6
The answer would be A. I just did this yesterday. Do you want the steps?
Answer:
Bro u need to shu.t up all ready
Step-by-step explanation:
Answer:THIS TOOK ME FOREVER BUT WAS WORTH IT
1)1 1/7 times 1 3/4=2
2)8 1/3 times 3/5=5
3)4 3/8 times 1 2/3= 7 7/24
4)5 1/2 times 3 1/3=18 1/3
5)7 1/5 times 2 1/6=10 3/14
6)2/3 times 4/15=8/4
7)2 2/5 times 1 1.4=27 9/25
8)4 2/5 times 10=44
9)26 times 2 1/2=65
10)6 times 3 2/3=22
11)6 1/4 times 1 5/7=10 5/7
12)3 1/3 times 2 3/5=8 2/3
13)4 1/2 times 4 2/3=21
14)5 5/8 times 1 5/9=8 2/4
Step-by-step explanation:
The greatest common factor of two numbers, one of which is 1, will always be 1.
