The half life formula is :
where N(t) = remaining quantity after t years
No = Original Quantity
t = time in years
T = half life in years
From the problem, we have :
N(t) = 30 grams
No = 100 grams
T = 674
Solve for t :
Take ln of both sides :
The answer is t = 1170.71 years
Answer: Option B
Step-by-step explanation:
The general cosine function has the following form
Where A is the amplitude: half the vertical distance between the highest peak and the lowest peak of the wave.
is the period: time it takes the wave to complete a cycle.
k is the vertical displacement.
The maximum value of y is is 0.75 and the minimum is -0.75. Then the amplitude A is:
Then
The cycle is repeated every units
So the period is
Thus:
The function is:
when y is maximum therefore As shown in the graph
Ok so for area you multiply the length by the width and for perimeter you just add them.. hope this helps!!
Answer:
T(-3,-2)
Step-by-step explanation:
R(x,y)
R(3,2)
P(6,0)
N(0,-4)