Answer:
x would be 1
Step-by-step explanation:
The answer is an equilateral triangle
Answer:
(6, 8)
Step-by-step explanation:

8x + y - z
You can tell because each term is separated by an operator such as +, -, *, or /
Answer:
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| -5 -2 |
| 4 12 |
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Step-by-step explanation:
A matrix can only be added to (or subtracted from) another matrix if the two matrices have the same dimensions . To add two matrices, just add the corresponding entries, and place this sum in the corresponding position in the matrix which results.