Answer:
option-C
Step-by-step explanation:
We are given row-echelon form
So, we can write equation from matrix as


Let's assume

now, we can find x and y




so, we get solutions as



where t can be any real numbers
Answer:
7
Step-by-step explanation:
=(7-3)+6÷2
=(7-3)+3
=4+3
=7
Answer: 22
Step-by-step explanation:
hi as a person who is taking geometry, i think i can help
Answer:
7x-3=5x+1 ->x=2
Step-by-step explanation:
to find the x, you would put both equations together like how it is shown above, then try and get x to one side
7x-3=5x+1
+3 +3
7x=5x+4
-5x -5x
2x=4
/2 /2
x=2
Answer:
60
Step-by-step explanation:
10 x sqrt64 - 5 x 4
10 x 8 - 5 x 4
80 - 20
60