Answer:
1.75 bags of dog food.
Step-by-step explanation:
7/4 = 1.75
Each dog gets 1.75 bags of dog food.
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Answer:
42?
Step-by-step explanation:
I believe it's 42.
every triangle is 180 degrees
if one side is 90, the other is 90, the opposite side of the right angle = 90
meaning that whole X-ish part is 90
90 plus 48 is 138.
180-138 is 42
Answer:
Step-by-step explanation:
We want to find the inverse of
To find the inverse matrix, augment it with the identity matrix and perform row operations trying to make the identity matrix to the left. Then to the right will be inverse matrix.
So, augment the matrix with identity matrix:
- Subtract row 1 multiplied by 4 from row 2
- Add row 1 multiplied by 4 to row 3
- Subtract row 2 multiplied by 2 from row 3
- Add row 3 multiplied by 2 to row 1
- Subtract row 3 multiplied by 11 from row 2
As can be seen, we have obtained the identity matrix to the left. So, we are done.
Total concentration=
Total concentration=
Total concentration=
Total concentration= 65 %