The decay rate should have units, it should be negative and it should be 100 times smaller than what you posted.
k = -.000124 / years
k = -.000124 / years
Half-Life = ln (.5) / k
Half-Life = -.693147 / -.000124
Half-Life =
<span>
<span>
<span>
5589.8951612903
</span>
</span>
</span>
Half-Life =
5,590 (rounded)
elapsed time = half-life * log(bgng amt / end amt) / log(2)
elapsed time = 5,590 * log(10) /
<span>
<span>
<span>
0.3010299957
</span>
</span>
</span>
elapsed time = 5,590 * 1 / <span>
<span>
0.3010299957
</span>
</span>elapsed time =
<span>
<span>
<span>
18,569 years
</span></span></span>Source:
http://www.1728.org/halflife.htm
Answer:
9
Step-by-step explanation:
<em>Degrees of freedom</em> is the number of values in the final calculation of a statistic that are free to vary. Degrees of freedom are related to sample size and calculated by n-1 where n is the <em>sample size</em>.
The Supervisor selects 10 teddy bears as sample from 5000 teddy bears produced daily. Therefore in this situation, there are 10-1=9 degrees of freedom
Answer:
The numbers are 19 and 71.
Step-by-step explanation:
Let x and y represent the two numbers. Then x + y = 90.
Also, if we assume that the larger number is y, then y = 3x + 14.
We must solve this system of linear equations. Since we already have the result of solution for y (y = 3x + 14), let's use the substitution method to find the solution:
x + y = 90 becomes x + 3x + 14 = 90, or:
4x = 76. Thus, x = 76/4, or 19. If x = 19, then y = 3(19) + 14, or y = 71.
The numbers are 19 and 71.
Note that these add up to 90, as they must, and that 71 is 14 more than 3 times 19.
<span>measure of ∠EGF = 1/2( 180 - 50)
= 1/2(130)
= 65
</span><span>the measure of ∠CGF = 180 - 65
= 115</span>
