Okay. What you have to do is add all of the numbers shown.
103+36+33
Once you have gotten your answer(172) you must subtract that number with 180.
The answer is 8.
Answer:
Given that,
The number of grams A of a certain radioactive substance present at time, in years
from the present, t is given by the formula
a) To find the initial amount of this substance
At t=0, we get
We know that e^0=1 ( anything to the power zero is 1)
we get,
The initial amount of the substance is 45 grams
b)To find thehalf-life of this substance
To find t when the substance becames half the amount.
A=45/2
Substitute this we get,
Taking natural logarithm on both sides we get,
Half-life of this substance is 154.02
c) To find the amount of substance will be present around in 2500 years
Put t=2500
we get,
The amount of substance will be present around in 2500 years is 0.000585 grams
Step-by-step explanation:
-7-13>-15x
-20>-15x
x>-20/-15
x>4/3
please give the domain.
or write on your own.!
In order to make a table, we sample some x values (whichever we want), and we compute the expression for those value. Each x value will yield a unique y value.
If you need this table to graph the function, you'll only need two points, since this is a line, and having two points you just need to connect them.
Here are some samples, feel free to make more if you need to:
So, we have the following table
Answer:
Step-by-step explanation:
Subtract 2 on both sides
7x = -56
Divide 7 on both sides
x = -8