A) a=the initial value ($1650)
b=1-percent of decrease (0.81 or 81%)
B) About 3 years
13-4x=1-x
13=4x+x=1-x+x
13-3x=1
13-1-3x=1-1
12-3x=0
12=3x
12/3=3x/3
4=x
Therefore, x=4
Answer:
(x-4)^2 + (y+5)^2 = 324
Step-by-step explanation:
The equation of a circle is given by the equation (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center point of the circle.
Therefore, since the center point of the circle and the radius is given, we can just plug the numbers into the formula:
(x-4)^2 + (y+5)^2 = 18^2
<u>(x-4)^2 + (y+5)^2 = 324</u>
Answer:
Option C. His answer is not correct, because the same can not be less than either attend
Step-by-step explanation:
we have

we know that



substitute
----> is not true
therefore
His answer is not correct, because the same can not be less than either attend