Answer:
-0.48
Step-by-step explanation:
(-1.2)(0.4)
= - 0.48
So ten tens = 100 so u multiply and u get 40 tens which are 400= 4 hundreds
Answer:
The correct answer is:
Between 600 and 700 years (B)
Step-by-step explanation:
At a constant decay rate, the half-life of a radioactive substance is the time taken for the substance to decay to half of its original mass. The formula for radioactive exponential decay is given by:

First, let us calculate the decay constant (k)

Next, let us calculate the half-life as follows:

Therefore the half-life is between 600 and 700 years
Answer:
it is so simple lol
Step-by-step explanation:
just know that that angle is 90 degrees which means that you should do 90-41
Just took the test, the correct answer -29.75mm^3 / day
Hope this helps :)