Answer:
Step-by-step explanation:
We know that the general form of the exponential decay formula is
, where y is final amount remaining after t time, A is the original amount and r is the rate of decay
Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident.
Hence, the ratio of remaining since the nuclear accident is
Answer: 1/5
Step-by-step explanation: l
Answer:
( cos40° + isin40°)
Step-by-step explanation:
To divide
= [ cos(x₁ - x₂) + isin(x₁ - x₂)
Given
= ( cos(90 - 50)° + isin(90 - 50)°
= ( cos40° + isin40° )
7/8 x = 21
7x = 21×8
7x = 168
x = 24
Answer:
$63.00 is the closet answer.
Step-by-step explanation:
12.70 x 5
12.7
× 5
------------------
13
63.5
Therefore, 12.7×5=63.5.
$63.5