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upper level math high school math science social sciences literature and english foreign languages other math
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upper level math high school math science social sciences literature and english foreign languages other math
upper level math high school math science social sciences literature and english foreign languages other math

### Exercises

1.

Olga is correct. The absolute value will either be greater, when a negative number changes to a positive, or equal, when a positive number remains positive.

2 answ
2.

A is negative, and B is positive, because if the numbers are opposites, one has to be negative and one has to be positive. Since B is given as greater than A, and a positive is always greater than a negative, B must be positive.

1 answ
3.

a) 10.4

b) -10.4

1 answ
4.

a) 7

b) 7

1 answ
5.

a) 21
b) -21

1 answ
6.

1 answ
7.

1 answ
8.

1 answ
9.

1 answ
10.

1 answ
11.

1 answ
12.

1 answ
13.

True

1 answ
14.

True

1 answ
15.

False

1 answ
16.

True

1 answ
17.

False

1 answ
18.

True

1 answ
19.

True

1 answ
20.

True

1 answ
21.

12

1 answ
22.

1 answ
23.

10

1 answ
24.

5

1 answ
25.

0

1 answ
26.

10

1 answ
27.

2

1 answ
28.

5

1 answ
29.

0

1 answ
30.

14

1 answ
31.

1 answ
32.

True

1 answ
33.

1 answ
34.

True

1 answ
35.

1 answ
36.

1 answ
37.

1 answ
38.

1 answ
39.

1 answ
40.

1 answ
41.

Positive

1 answ
42.

Negative twenty is less than negative three.

1 answ
43.

Negative four is less than zero.

1 answ
44.

Negative nine is greater than or equal to negative ninety.

1 answ
45.

1 answ
46.

1 answ
47.

1 answ
48.

2 answ