The point (x, y) lies on the circle with center (8,−4) and radius 9. Which equation must be true? A.
(x−8)2+(y+4)2−−−−−−−−−−−−−−−√=81
B.
(x+8)2+(y−4)2−−−−−−−−−−−−−−−√=81
C.
(x+8)2+(y−4)2−−−−−−−−−−−−−−−√=9
D.
(x−8)2+(y+4)2−−−−−−−−−−−−−−−√=9

the answer is 5/3x+7/5y+7

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

answer: no, but if it does it's a obvious pattern.

step-by-step explanation: