7 is the answer. hope this helps!
Answer:
(x-1)^2 + y^2 = 25
Step-by-step explanation:
center C ( ( xA + xB)/2 , (yA+yB)/2 ) = ( 1 , 0)
AB = 10
radius = AB / 2 = 5
equation formula: (x - xC)^2 + (y-yC)^2 = radius^2
Hence:
(x-1)^2 + y^2 = 25
X=5
Measure of angle BCA= 55
Measure of angle B= 76
Answer:

Step-by-step explanation:
nine fourths is also

two thirds is also

subtract,

L.C.M = 12



I agree the answer is 225 and you can also use the calculator too.