To convert a fraction to a decimal you move the decimal point two spaces to the left
Answer:
-8, 16, ...
Step-by-step explanation:
You are subtracting 8 everytime. Therefore, you would go into negatives from here.
Answer:
the question is probably wrong
Step-by-step explanation:
10 - -6 = 16
-6 - -6 = 0
16/0= undefined?
Answer:
x ≥ 7
Step-by-step explanation:
First, put the same terms on the same side. So subtract 5 from both sides. You will get:
-3x ≤ -21
Divide both sides by -3 to get x alone. When dividing, the inequality sign will change to the opposite. So it will go from a (less than or equal to) sign to a (greater than or equal to) sign.
You will get:
x ≥ 7
Therefore, x will be a number that is greater than or equal to 7.
Answer:
It will take 60 days for half of the Iodine-125 to decay
Step-by-step explanation:
The amount of iodine-125 after t days is given by the following equation:
In which Q(0) is the initial amount and r is decay rate, as a decimal.
Decay rate of 1.15% per day.
This means that
So
To the nearest day, how long will it take for half of the Iodine-125 to decay?
This is t for which
So
To the nearest day
It will take 60 days for half of the Iodine-125 to decay