pleas help with 18 out of 120?

Question

1: Evaluate | -4 |
4, -4
4 only
-4 only
No solution


2: Evaluate | 6 |
6 only
-6 only
6, -6
No solution


3: Evaluate | 1/4 |
-1/4 only
No solution
1/4, -1/4
1/4 only


4: Evaluate | -2/3 |
-2/3
No solution
2/3
2/3, -2/3


5: If | x | = 7, x = ________.
7, -7
7 only
-7 only
No solution


6: If | x | = -2, x = ________.
-2 only
2, -2
2 only
No solution


7: If x = | -1/2 |, x = ________.
1/2, -1/2
1/2 only
-1/2 only
No solution


8: If x = | 9 |, x = ________.
No solution
9, -9
9 only
-9 only


9: Solve for x: | x + 2 | = 5
-3, 7
3, -7
3 only
No solution


10: Solve for x: | 4 - x | = 0
No solution
4, -4
4 only
-4 only


11: Solve for x: | 4 - 2x | = 8
-2, 6
2, -6
2 only
No solution


12: Solve for x: 6 = | x + 4 |
2 only
-2, 10
No solution
2, -10


13: Solve for x: | x - 4 | + 3 = 9
10, -2
10, -8
-10, 2
-10, 8


14: Solve for x: | -3x + 4 | = | -x + 2 |
1, -1
No solution
1, 3/2
-1, -3/2


15: Solve for x: | x + 2 | = | 2 - x |
No solution
2, -2
0 only
2 only


16: Solve for x: | 4 - x | = | 2x + 1 |
-1 only
-1, 5
1, -1
1, -5


17: Solve for x: | x/5 - 21/10 | = | x/2 |
3, -7
No solution
21/2 only
-3, 7


18: Solve for x: | x/2 + 1/3 | = | x - 2/3 |
2, 0
-2, 0
2, 2/9
-2, -2/9

Answer 1

1. 4 only
2. 6 only
3. 1/4 only
4. 2/3 only
5. 7,-7
6. no solution
7. 1/2 only
8. 9 only
9. 3,-7
10. 4,-4
11. -2,6
12. 2,-10
13.10,-2
14. 1,3/2
15. 0 only
16. 1,-5
17. 3,-7
18. 2,2/9
hope that helped you =)

Answer 2

1: Evaluate | -4 | 4 only
2: Evaluate | 6 | 6 only
3: Evaluate | 1/4 | 1/4 only
4: Evaluate | -2/3 | 2/3
5: If | x | = 7, x = _____7 only



6: If | x | = -2, x = ________.
No solution


7: If x = | -1/2 |, x = ________.1/2 only



8: If x = | 9 |, x = ________.9 only


9: Solve for x: | x + 2 | = 5
3 only



10: Solve for x: | 4 - x | = 0
-4 only


11: Solve for x: | 4 - 2x | = 8
2 only



12: Solve for x: 6 = | x + 4 |
2 only


13: Solve for x: | x - 4 | + 3 = 9
10, 2



14: Solve for x: | -3x + 4 | = | -x + 2 |
1, 3/2



15: Solve for x: | x + 2 | = | 2 - x |
2 only


16: Solve for x: | 4 - x | = | 2x + 1 |
1, -5


17: Solve for x: | x/5 - 21/10 | = | x/2 |
3, -7


18: Solve for x: | x/2 + 1/3 | = | x - 2/3 |
2, 2/9

Answer 3

1. 4 only
2. 6 only
3. 1/4 only
4. 2/3 only
5. 7,-7
6. no sol'n
7. no sol'n
8. 9,-9
9. 3,-7
10. 4 only
11. -2,6
12. 2, -10
13. 10,-2
14. 1, 3/2
15. 0 only
16. 1, -5
17. 3, -7
18. 2, 2/9

Answer 4

1. 4
2. 6
3. 1/4
4. 2/3
5. 7, -7
6. No solution
7. 1/2
8. 9
9. 3, -7
10. 4
11. -2, 6
12. 2,-10
13.10, -8
14.1, 3/2
15.0
16.1, -5
17.3,-7
18.2, 2/9

Answer 5

What you need to do is look up "absolute value" and how it works. It isn't a very hard concept. A google search should help you with this one.

Answer 6

Remember absolute value is always positive