The answer would be 6
Steps: The equation of a circle is (x – h)² <span>+ (y – k)</span>²<span> = r</span>²; since we are trying to find the radius we are going to focus on the r². Now if you look the equation has the 36 filled in as the r² so r² = 36; we now have to isolate the r to get the radius, how do we get the radius? We Square root the r² and 36. After we get r = 6, The radius is 6 units
7 miles. You divide 5 by 20 mins and then multiple that product by 28
For finding the strength of the capsules after one year, we will use half-life formula. The formula is:
A = A₀ 
where, A= Final amount
A₀ = Initial amount
t= time elapsed
h= half-life
Here, in this problem A₀ = 10000 milligram, t= 1 year or 365 days
and h= 28 days
So, A = 10000 
⇒ A = 10000 
⇒ A = 1.187
So, the strength of the capsules after one year will be 1.187 milligrams.
X = cost of 1 sweat shirt
3x = 45
x = 15
5x = 5(15) = 75
It would cost $75. Hope this helps!