This is a typical radioactive decay problem which uses the general form:
A = A0e^(-kt)
So, in the given equation, A0 = 192 and k = 0.015. We are to find the amount of substance left after t = 55 years. That would be represented by A. The solution is as follows:
A = 192e^(-0.015*55)
<em>A = 84 mg</em>
Answer:
The last one
Step-by-step explanation:
The more weight something has the faster it will fall
Answer:
x-intercept is (-4,0) and the y-intercept is (0,-2
Step-by-step explanation:
There are 2 ways to find the y-intercept. One way is to put the equation in slope-intercept form. However, there is a more efficient way as well.
Another way to do it is to plug 0 in for x and y. The x-intercept will have the coordinate of (x,0). So to find the x-intercept you can plug in 0 for y and solve for x. To find the y-intercept do the opposite and plug 0 in for x.
So, first, plug 0 in for y
- x+2(0)=-4
- x+0=-4
- x=-4
Then plug in 0 for x
- 0+2y=-4
- 2y=-4
- y=-2
Therefore, the x-intercept is (-4,0) and the y-intercept is (0,-2).
Answer: "
267.95 m³ " .
______________________________________________________Explanation:________________________________________________________V = (4/3) *

* r³ ;
Given: diameter, "d" = "8 m" ;
radius, "r" = 8 m / 2 = 4 m "
V = (4/3) *

* r³
V = (4/3) *

*(4m)³
V = (4/3) * (3.14) * 4³ * m³ ;
V = (4/3) * (3.14) * (4*4*4) * m³ ;
V = (4/3) * (3.14) * (64) * m³ ;
V = 267.9466666666666667 m³ ;
round to: "
267.95 m³ " .
_________________________________________________________
Answer:
The second side would be 15 inches.
Step-by-step explanation:
In order to determine the other side, create a proportion. On the left side, use the original dimensions. On the right side, use the new dimensions with x as the unknown.
4/6 = 10/x
Now cross multiply to solve.
10*6 = 4*x
60 = 4x
15 = x