From the statement you can find the function that represents the percent of strontium-90 that remains after t years of the nuclear accident.
Call P the percent:
---> P = e ^ (- 0.025t)
Now you can also estimate the half-life of the isotope strontium-90:
Call Pi the initial percent and P2 the half percent:
P2 = 0.5 * P initial =>
P2 = 0.5 * Pinitial = Pinitial * e ^ (-0.025 t)
=> 0.5 = e ^ (-0.025t)
=> ln 0.5 = -0.025t
=> t = - ln (0.5) / 0.025
=> t = 27.7 years <----- half-time
Answer:
<em>{-15, -3, 9}</em>
Step-by-step explanation:
The range is the set formed by the images of the elements in the domain.
The image of -2 equals 6*(-2) - 3 = -15
The image of 0 equals 6*0 - 3 = -3
The image of 2 equals 6*2 - 3 = 9
Therefore the range is the set
{-15, -3, 9}
Step-by-step explanation:
a) The range at which the internal temperature can rise is from 2°F to 6°F, which means that in order fo the final temperature of the turkey to fall within the range of 165-170°F, we need to pull remove the turkey when the internal temperature is at a minimum of 164°F or a maximum of 168°F.
b) I'd rather err on the higher side of the internal temperature. After all, no one eats poultry cooked medium rare due to the high probability of salmonella poisoning and the 165-170°F is meant to destroy the microbes that causes food poisoning. Not only that, poultry meat gets sufficiently cooked at that range.
Answer:
$426.24
Step-by-step explanation:
Louis makes shoe insoles.
He is paid $0.12 per pair of insoles.
For the given week, he made a total of;
699 + 702 + 710 + 705 + 736 = 3,552
Louis' gross pay per week = 3,552 × $0.12 = $426.24
She will save $45 dollars a week the working is
150÷10
=15
30%=15×3
$45
