Answer:
0.2
Step-by-step explanation:
Present Value = $320
Before 1 One Year, Value =$400
Discount = $400-$320= $80
% Discount = (Discount/Amount Before 1 Year)*100
%D = (80/400)*100
.%D = 20% Or 0.2
Answer:
0.04
I rounded to one significant figures.
Answer:
![(x+4)^2 - 11 = 0\\](https://tex.z-dn.net/?f=%28x%2B4%29%5E2%20-%2011%20%3D%200%5C%5C)
a = 4
b = -11
Step-by-step explanation:
![x^{2} +8x+5\\](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B8x%2B5%5C%5C)
use the complete the square method:
![x^{2} +8x+5=0\\x^{2} +8x = -5\\\\(x+4)^{2} = x^2 + 8x + 16\\\\x^2 + 8x + 16 = -5 + 16\\](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B8x%2B5%3D0%5C%5Cx%5E%7B2%7D%20%2B8x%20%3D%20-5%5C%5C%5C%5C%28x%2B4%29%5E%7B2%7D%20%3D%20x%5E2%20%2B%208x%20%2B%2016%5C%5C%5C%5Cx%5E2%20%2B%208x%20%2B%2016%20%3D%20-5%20%2B%2016%5C%5C)
we completed the square of x^2 + 8x + ... which is x^2 + 8x + 16 using (x+4)^2
we added 16 to both sides because whatever you do to one side, you have to do to the other:
![x^{2} +8x+16 = 11\\(x+4)^2 = 11\\(x+4)^2 - 11 =0](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B8x%2B16%20%3D%2011%5C%5C%28x%2B4%29%5E2%20%3D%2011%5C%5C%28x%2B4%29%5E2%20-%2011%20%3D0)
This is the answer I got.
A=p+(p*0.03t)<span />
Answer: -17/4
Step-by-step explanation: