Answer:
Step-by-step explanation:
A phone company offers two monthly plans. Plan A costs $10 plus an additional $0.15 for each minute of calls. Plan B costs $19 plus and additional $0.10 for each minute of calls.
For what amount of calling do the two plants cost the same?
21 = 2x + 5
---> 21 - 5 = 2x
----> 16 = 2x
-----> x = 8
The internship pays $8 per hour.
You cannot add row 2 to column 3 because they have different dimensions. You can do any of the other operations, but the only one that makes any sort of sense is ...
Multiply row 2 by -1 and add it to row 3
_____
It makes no sense to multiply a row by zero. That makes the entire row zero and makes the matrix useless for finding any sort of solution.
You can switch columns, but that doesn't get you any closer to a solution here.
If I were trying to find a solution, I might
switch rows 1 and 2
multiply the new row 1 by -3 and add it to the new row 2
multiply the new row 1 by 2 and add it to row 3
This sequence of operations will make the first column [1 0 0], reducing the problem to 2×2 from 3×3.
Answer:
<h3>In the attachment.</h3>
Step-by-step explanation:
≤, ≥ - solid circle
<, > - open circle
≤, < - draw a line to the left
≥, > - draw a line to the right
We have x ≥ 11:
≥ - solid circle and draw the line to the right
Answer:
48÷8 = 6
Therefore the answer is 6/1 or just 6
