It’s AC, cause it passes through the center and intersects it at two points
Answer:
cubic blocks
Step-by-step explanation:
The given parameters are:



Required
Number of cubic blocks to fill the tank
To do this, we simply calculate the volume of the tank by:

This gives:


Simplify

Express as mixed numbers

Answer:
The number of words per page.
Step-by-step explanation:
We're given the time per page. The book could have 10 words or it could have 1,000 words. We wouldn't know until given that information.
There is no solution for the first one
if you eliminate y you get 2 equations
-13x - 13z = -25
-13x - 13x = -15
- there is no solution to theses
a23 means the element in the second row and the 3rd column
so its -5
The system of equations does not have a solution.
For example, imagine these two equations y = x + 7 and y = x + 9
Now subsitute y in the second equation with the value from the first equation:
x + 7 = x + 9
x - x + 7 = 9
0 + 7 = 9
7 = 9.
That happens because the equations represent parallel lines, which do not have a common pair of points.