Answer:



Step-by-step explanation:
1. Given, u = 20 , x = 4 , y = 7 , z = 10

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2. 
Multiplying or dividing a positive integer by any negative integer gives a negative integer
= - 8
3. 
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Hope I helped!
Best regards! :D
Answer:
A and D
explanation:
The other two answers looks like opinions
It is 180 because it rotates