Mark is solving the following system.
2 answers:
I think its he didnt eliminate the same variables
Solving the system of linear equations Mark tries to apply elementary transformations in order to eliminate one variable.
He makes such steps:
1. He multiplies equation (1) x+y+z=2 by 7 and adds it to equation (3) 4x-y-7z=16. This gives him:
7x+7y+7x+4x-y-7z=14+16,
11x+6y=30.
2. He multiplies equation (3) 4x-y-7z=16 by 2 and adds it to equation (2) 3x+2y+z=8. This step gives him:
8x-2y-14z+3x+2y+z=32+8,
11x-13z=40.
Thus, he did not eliminate the same variables in steps 1 and 2.
Answer: correct choice is C
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12+34 = 46
Please mark Brainliest if this helps!
Answer: 82.88
Step-by-step explanation:
BxHxW
7.4 x 3.2 = xxx
7.4 x 8 = xxx
So, what you'll do is combine both of the sums, and you will get 82.88
Answer:
40
Step-by-step explanation:
34 to 40 eaasssy i think ims ry if wrong or it might be 35
The average value over the interval is the area under the curve divided by the width of the interval.
Area = 4*(6 -1) +5(8 -6) = 30
Width = 8 - 1 = 7
Average value = 30/7 = 4 2/7
