Answer:
4.048 hours
Step-by-step explanation:
A = Pe^(rt)
After 1 hour, the amount decreases by 29% (A = 0.71P), so r is:
0.71P = Pe^(r×1)
0.71 = e^r
r = ln(0.71)
r = -0.342
P = 400. When A = 100, the time t is:
100 = 400e^(-0.342 t)
0.25 = e^(-0.342 t)
ln(0.25) = -0.342 t
t = -ln(0.25) / 0.342
t ≈ 4.048
Approximately 4.048 hours have passed.
Dodecagon is a plane figure with 12 sides. To find the sum of angles of a dodecagon, we have to use the formula of sum of angles of a polygon with n sides, which is
S= (n-2)180
For Dodecagon , n=12. Therefore on substituting 12 for n , we will get
S= (12-2)180 =10*180 = 1800 degree .
SO the sum of angle measures of a dodecagon is 1800 degree .
Answer: 3
Step-by-step explanation:
if you use 3 then it is; 10+3=13 and 13*2=16
Answer:
Step-by-step explanation:
Define the function y(t) to be x(t) delayed by 0.3 seconds.
To interpret that we can say that y at time t take the value of x at time (t+0.3s).
So we can write
The graph relates X(t) and Y(t) for t=0.3 to t=4.0. There is a linear relation between the X and Y because the slope Y/X is a constant.
Answer:
Because you use it in life
Step-by-step explanation:
