Equation of a circle that has a center at (h,k) and radius of r is
(x-h)²+(y-k)²=r²
so
given center (-1,2)
(x-(-1))²+(y-2)²=r²
(x+1)²+(y-2)²=r²
sub the other point to find r or r²
it passes through (2,-2)
sub 2 for x and -2 for y
(2+1)²+(-2-2)²=r²
(3)²+(-4)²=r²
9+16=r²
25=r²
5=r
the equation is
(x+1)²+(y-2)²=5²
Answer: 19.625
Step-by-step explanation: if u need the explanation add me
Answer:
(-2,4] and [7,α)
Step-by-step explanation:
the domain is open at -2 but closed at 4 and also closed at 7 but open till infinity..
Answer:
3
Step-by-step explanation:
sorry i cant answer it wont let me
Answer:
3630
Step-by-step explanation:
726*5
= (700+20+6) * 5
= (700*5) + (20*5) + (6*5)
= 3500 + 100 + 30
= 3600 + 30
= 3630
