Which transformations preserve congruence? 1 . dilations when scale factor is greater than 1 or between 0 and 1
2 . dilations with a scale factor of 1
3 . reflections
4 . rotations
5 . translations

2 . dilations with a scale factor of 1

3 . reflections

4 . rotations

5 . translations

Step-by-step explanation:

2 . dilations with a scale factor of 1

3 . reflections

4 . rotations

5 . translations

2, 3 ,4 ,5

Step-by-step explanation:

3, 4,5 they are not changing the size of the shape but the position.

2 is just multiplying by 1 so the size stays the same

1 is multiplying by a scale factor of anything other than 1 so the size changes

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950