When you write the equation of a circle in the form

Then the center of the circle has coordinates
and the radius is 
So, in your case, the center of the circle is 
Answer:
x=6
Step-by-step explanation:
The answer to this is 8.
You can solve this by divide 64 into 8.
64/8=8
z=8
Answer:
It will take 554 years
Step-by-step explanation:
Here, we want to estimate the time when t will be $50
We can rewrite the exponential equation as;
y = 200(1-0.0025)^t
In this case, y = $50 and we want to calculate t
so, we simply proceed to substitute the value 50 for y
we have this as ;
50 = 200(1-0.0025)^t
50/200 = (1-0.0025)^t
1/4 = 0.9975^t
0.25 = 0.9975^t
Take the natural logarithm of both sides
ln 0.25 = ln 0.9975^t
ln 0.25 = t ln 0.9975
t = ln 0.25 / ln 0.9975
t = 553.8 = 554 years
The bike will be $50 in 554 years
<u>Given</u>:
The given expression is 
We need to determine the simplified value of the given expression.
<u>Simplification</u>:
Since, the given expression is in the form of
, the given expression can be simplified using the identity 
Comparing the given expression with the identity, we get;
and 
Using this in the identity, we get;

Simplifying, we get;

Thus, the simplified value of the given expression is 
Hence, Option c is the correct answer.