3. ∠1+∠2=180° and ∠2+∠3=180°
4. they are supplementary
5. ∠1+∠2=180°=∠2+∠3
6. ∠1+∠2=180°=∠2+∠3
∠2 are same in both side so ∠1=180°-∠2 =∠3=180°-∠2
7.
Answers:

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Work shown for part 1

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Work shown for part 2

(x² - 1)^-2/3
∛(x² - 1)-²
∛(1/(x² - 1)(x² - 1))
∛(1/(x^4 - x² - x² + 1))
∛(1/(x^4 - 2x² + 1))
1/x^4/3 - 1.25992105x^2/3 + 1
Answer:
Herbivore
Step-by-step explanation:
The mouse isnt a producer because he cannot make his own food
The mouse isnt a carnivore because he isnt eating meat
The mouse isnt a decomposer because he isnt breaking down dead or decaying organisms
Herbivores are animals that eat vegetables or greens/plants but not meat.