B-I hole this helps like if I’m right
Okay to find percentages of things you have to take that original value (1500) and multuply it by the percentage. But when you multiply you put the percentage into a decimal and move it over to the right side two decimal places to the left. For example 10.0% would mean you need to multiply by 0.10 okay?
So for this problem you need to do 1500 *.013 and you get 19.5 computers.
<h2>Problem:</h2>
tyler has 4 sandwichs he wants to cut each sandwich into halves how many 1/2 size pieces will he have
<h2>Solution:</h2>
<h2>Checking:</h2>
<h2>Final Answer:</h2>
<u>8</u><u> </u><u>p</u><u>i</u><u>e</u><u>c</u><u>e</u><u>s</u>
#CarryOnLearning
#AnswerForTrees
#BrainlyBookSmart
t = 12040 years
N=NOe^-kt
N = amount of C-14 at time t
NO = initial amount of C-14
k= 0.0001
t = time (unknown)
We know that the amount found is 30% of the original. Therefore we can simply set N to 30 and NO to 100 because 30% of 100 is 30. Really you can give any amount, but setting it at 100 is the easiest, so long as N is 30% of NO.
so if we set the problem up again using all the given values and the new ones we assigned:
N= 30
NO = 100
30=100e^-0.0001(t)
Remember, you are solving for t, so you have to try and manipulate the formula to get t by itself on one side.
We can divide both sides by 100 and you are left with:
.30=e^-0.0001(t)
You can see that you have "e" which means we can use natural log to get rid of e:
e^y = x and ln(x) = y
.30=e^-0.0001(t)
using the natural log,
.30 = x
-0.0001(t) = y
Therefore:
ln (x) = y
ln (.30) = -0.0001(t)
plug in the value ln(.30) into a calculator and you get:
-1.20397 = -0.0001(t)
*NOTE: normally it would not work if you have a negative answer because you cannot have negative years, however, there is a negative on the other side of the equation which will cancel out so it works in this case.
now to solve for t, we simply divide both sides by -0.0001
Therefore
t = 12039.7
But you have to round to the nearest year so
t = 12040
**NOTE: the k value given (which is the rate at which C-14 decays each year) is very small. That means that you will have a large value for time because it takes so long for the C-14 to decay every year.
Hope that helped :)
Answer:
''Multiply k by 5, and then add 3 to the product'' means:
Step-by-step explanation:
When we multiply k by 5, we get the product of k and 5.
In other words,
Add 3 to the product means we need to add 3 to 5k.
In other words,
- Add 3 to the product 5k: 5k + 3
Therefore,
''Multiply k by 5, and then add 3 to the product'' means: