Answer:

Step-by-step explanation:
we know that
The general form of the equation of a circle is

where D, E, F are constants
step 1
Find the radius of the circle
Remember that the distance from the center to any point on the circle is equal to the radius
so
the formula to calculate the distance between two points is equal to
substitute the values
step 2
Find the equation of the circle in standard form

In this problem we have
center ( -2,1)
radius r=2 units
substitute


Step 3
Convert to general form

Answer:
and 
Step-by-step explanation:
The ratios of sine and cos are defined as follows:
, and

The hypotenuse is always the side opposite of the 90 degree angle (for the given triangle, the hypotenuse is 85)
Since we are looking at the angle A, the opposite side with respect to A would be the side length of 84. That leaves the side 13 as the adjacent side.
Thus, we can now write:


The correct answer is the first answer choice.
No, the answer is 2
X=2
This is because if we multiply the number by x which is 2
so DST is 110, and RSD is 44, so that is 154, and if we do it with RST we also get 154
So the correct answer is X=2
Answer:
b is correct for Maria but c is correct for the boy