Answer:
30 mph i think
Step-by-step explanation:
Answer:
52.3272727...
the 27 at the end is repeating
Answer:
7) 
8) 
Step-by-step explanation:
You must use the laws of exponents.
7)
When you raise a fraction to an exponent, raise the numerator and the denominator to that exponent.
When you raise a product to an exponent, raise each factor to that exponent.
When you raise an exponent to an exponent, multiply the exponents.
8)
To divide powers with the same base, subtract the exponents. Remember that a plain variable, such as w is the same as w^1.
It is 35 degrees a piece. Check the previous answer between both of us for clarification.
Hope I helped!
Good luck!
Radioactive half-life is the time it takes for half an amount of radioactive material to decay into something else. In this case, it is assumed that the decay product is not radioactive or otherwise hazardous.
We must use the radioactive decay formula to determine at what time the radiation reaches a safe level.
A = Ao[e^(-0.693)(t)(t 1/2) where t 1/2 is the half-life, t is elapsed time, Ao is the original quantity, A is the future quantity.
We are given a half-life of 2.4 days , an Ao of 1.25 and an A of 1.00:
1.00 = (1.25)e^(-0.693)(2.4)t
1.00/1.25 = e^(-1.6632)t
0.8 = e^(-1.6632)t
t = 0.135 days = 3 hrs 15 min
This is the amount of time to a "safe level" using only radioactive decay, not venting or other means.
