Jim drove 50 miles per hour
Answer:
-3x^4 - 14x^3 + 3x^2 - 10
Step-by-step explanation:
Actually I don't know the answer but what I thing is none of the above.
The area of a circle if the diameter is 80 is
A=5026.55
7978 years
Step-by-step explanation:
A = A02^(-t/hl)
where hl = half-life.
Dividing both sides by A0 and taking the logarithm, we get
ln(A/A0) = -(t/hl)ln2
or solving for t,
t= -(hl)ln(A/A0)/ln2
note that A/A0 = 0.38
t = -(5715 yrs)[ln(0.38)/ln2]
= 7978 years
