There are a total of 31 fish in the tank. Therefore, the probability of it being a goldfish is 24/31 or about 77.4%, since there are 24 goldfish. The probability of it being an angel fish is 2/31 or about 6.45%, for the same reason as before.
To find the answer, you must find the midpoint of their x-coordinates and their y-coordinates. To do that, you take the average between their x and y-coordinates.
So, in this case, it is:
x: (12+12)/2 = 24/2 = 12
y: (7-3)/2 = 4/2 = 2
So, the answer is: (12,2)
The standard form of a circle is:

Where
(h, k) is the center
r is the radius
Since the center is (1, 1), we can write:

EG (hypotenuse of the right triangle) is the radius of the circle. Thus, we can say >>>

The correct answer is
B
We can model this situation with a linear equation. We know for our problem that the initial point is (0, 25), and the next point is (10, 108.4). To relate those points and find the slope of our linear equation, we are going to use the formula:

. Notice that we know from our points that:

,

,

, and

. So, lets replace those values in our formula to find

:



Now that we have the slope of our linear equation, we can use the point slope formula:

to complete our linear equation:



Or in function notation:

We can conclude that the equation that matches this situation is

.