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Romashka-Z-Leto [24]
2 years ago
5

50p thanks to whoever helps :)

Mathematics
1 answer:
barxatty [35]2 years ago
4 0

Answer:

1. 1+(2+3)

2. (1 +2)+3

3. (2*3)*4

4. 2*(3*4)

5. 3*2

6. 2+1

7. 2(x+3)

8. 4x+3

9. (4*3)+(4*2)

10. (-2*5)+(-2*x)

11. (3*10)-(3*y)

12. (-3*4)-(-3*x)

13. commutative property

14. commutative property

15. distributive property

16. associative property

17. 1+(-3)

18. 4+3

19. -(-4-3)

20. -4+3

Hope this helps

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a) p=0.2

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c) The expected value of correct questions is 1.2

Step-by-step explanation:

a) Since each question has 5 options, all of them equally likely, and only one correct answer, then the probability of having a correct answer is 1/5 = 0.2.

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Recall that \binom{n}{k}= \frac{n!}{k!(n-k)!} In this case, the student passes if X is at least four correct questions, then

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frozen [14]

Answer:

Domain of a geometric or arithmetic sequence is the counting numbers unless otherwise noted.

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