1. -4/9(-7/9)=

2. 8/15(-2/3)=

3. 9/10 divided (-6/5)=

4. -4/11 divided 2/7=

i don’t understand how to do them. can anyone explain how to get the answer?

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Ответ:

lelliott86

23.08.2021

Mathematics

7. A

8. C

Step-by-step explanation:

7. 2(-2)^2 - 3(-2) + 4 = 18 (A.)

8. 2(3a)^2 - 3(3a) + 4 = C

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1. -4/9(-7/9)= 2. 8/15(-2/3)= 3. 9/10 divided (-6/5)= 4. -4/11 divided 2/7= i don’t understand how to do them. can anyone explain how to get the answer?