Answer:
hope it helps.
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Answer:
III. 2
Step-by-step explanation:
To solve out the inequality, first you subtract 2 on each side, leaving you with 2 > -4x. Then, you divide each side by -4. When you divide by a negative, the direction of the sign switches. Therefore, you get -2/4 < x which is -1/2 < x in simplified version. This means that x is anything greater than -1/2. The only answer choice that is greater than -1/2 is III.
Answer:
60º
Step-by-step explanation:
Using unit circle you can count up until you get the answer of 60º. Alternatively you can multiply 2pi/6 by 180/pi which will give you the same answer.
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.