Answer:
44.7 mg
Step-by-step explanation:
The equation for exponential decay can be written in the form ...
y = a·b^(t/p)
where 'a' is the initial value, 'b' is the decay factor, 'p' is the period over which the decay factor is applicable, and t is time in the same units as p.
<h3>Setup</h3>
Using the above equation, we have ...
a = initial value = 110 mg
b = decay factor = 55/110 = 1/2 over time period p=20 hours
Then the equation is ...
y = 110·(1/2)^(t/20) . . . . amount remaining after t hours
<h3>Solution</h3>
We want the amount remaining after 26 hours. That will be ...
y = 110·(1/2)^(26/20) ≈ 44.67
About 44.7 milligrams will remain after 26 hours.
Answer:
third one
(radius 3 and height 5)
Step-by-step explanation:
calculator
Answer:
1.5
Step-by-step explanation:
the slope formula is y2-y1/x2-x1
so take two given points (I'll use (-1, -5) and (3,1))
1--5/3--1
6/4
1 2/4
1.5
Answer:
47
Step-by-step explanation:
When an expression is evaluated, the expression is either simplified or calculated.
The result of the expression is 47
The expression is given as:
Where:
x = 2 and y = 4
Substitute 2 for x and 4 for y in the expression
So, we have:
Evaluate all exponents
Evaluate all products
Evaluate like terms
Hence, the result of the expression is 47
Answer:
602.42 million
Step-by-step explanation:
I know the answer is 602.42 million because I used addition and subtraction.
First, I knew there was 5.66x 107 million students. So, I multiplied 5.66 and 107, and I got 605.62 million. I knew there were 3.2 million teachers in the US. Next, I subtracted 3.2 million from 605.62 million.
605.62-3.2=602.42
So, there are 602.42 million more students than teachers in the United States.
