Answer:
-1/2
Step-by-step explanation:
107360 yards = 31 miles = 1 hour
1 second = 1789.3333333 yards
The equation of the line is y=-2x+3.
Answer: 7 years
Step-by-step explanation:
= In2 / ∧
since the half life is given , we have :
22 = In 2/ ∧
∧ = In2/22
∧ = 0.032
Recall the formula for half life:
=
Therefore:
0.80 =
Take the In of both sides
In 0.80 = - 0.032t
t = In 0.80 / - 0.032
t = 7 years
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