Answer:
29
Step-by-step explanation:
P=a+b+c=11+5+13=29
The amount of strontium that will remain after 40 hours is 5 g
<h3>How to determine the number of half-lives </h3>
- Half-life (t½) = 10 hours
- Time (t) = 40 hours
- Number of half-lives (n) =?
n = t / t½
n = 40 / 10
n = 4
<h3>How to determine the amount remaining </h3>
- Original amount (N₀) = 80 g
- Number of half-lives (n) = 4
N = N₀ / 2ⁿ
N = 80 / 2⁴
N = 80 / 16
N = 5 g
Learn more about half life:
brainly.com/question/26374513
Answer:
C) (x-6)^2
Step-by-step explanation:
x2 - 12x+36
What two numbers multiply to 36 and add to -12
-6*-6 = 36
-6+-6 = -12
(x-6) (x-6)
(x-6)^2
Answer:
the answer is 12 inches
Step-by-step explanation:
there is 1 foot per 12 inches
or
12 inches make a foot
Answer:
B
Step-by-step explanation:
Here, we want to find which of the expressions is undefined
kindly note that
sin^-1 is arcsin
cos^-1 is arccos
A. arcsin (1) = 90 degrees
B. arcsin (-2) = undefined
c. arccos 0 = 90 degrees
d. arccos (-1) = 180