LifeIsADangerousGame 2 years ago Could someone check this please? I'd appreciate it :D

3. jim_thompson5910

the first four are correct, so nice job on that so far

4. jim_thompson5910

5 is correct but 6 is not

5. jim_thompson5910

same with 7, #7 is incorrect

6. jim_thompson5910

8 is incorrect as well

7. jim_thompson5910

9 is incorrect too I think you mixed up the terms converse and inverse

Mmk, let me go back and do them. Thanks for checking them :D don't let me stop you xD

9. jim_thompson5910

10 is incorrect, you mixed up inverse and contrapositive

10. jim_thompson5910

11 is correct

11. jim_thompson5910

12 is correct

12. jim_thompson5910

13 is correct

13. jim_thompson5910

14 is correct

14. jim_thompson5910

15 is correct

For 10, my teacher corrected it because there was a mistake (all the answers are wrong). 10. If a shape is a rectangle then it has 4 right angles. A If a shape is not a rectangle, then it does not have 4 right angles. TRUE B If a shape is not a rectangle, then it does not have 4 right angles, FALSE C If a shape does not have 4 right angles, then it is not a rectangle, TRUE D If a shape has does not have 4 right angles, then it is not a rectangle, FALSE It's that instead and I choose C.

16. jim_thompson5910

16 is a fallacy...which a lot of people mix up 16 is not a valid argument

Alright, I fix that

18. jim_thompson5910

#10 (this new one), you're looking for the inverse? converse? contrapositive?

19. jim_thompson5910

17 is incorrect (it's definitely not true because if an animal had 4 legs, then it could easily be a cow, so that's false...but the original statement is true)

20. jim_thompson5910

18 is incorrect because it depends on 17 so if you got 17 wrong, then there's a very good chance you'll get 18 wrong

21. jim_thompson5910

19 is wrong

22. jim_thompson5910

so is 20

23. jim_thompson5910

21 is correct

24. jim_thompson5910

22 is correct because the two aren't equivalent (having 4 legs and being a dog)

25. jim_thompson5910

23 through 25 are all correct

For number 10, I'm looking for the contrapositive. Why is 17 incorrect? I made the sentence into a conditional statement and then in 18 I said that the conditional statement was false.

27. jim_thompson5910

10. If a shape is a rectangle then it has 4 right angles. A If a shape is not a rectangle, then it does not have 4 right angles. TRUE B If a shape is not a rectangle, then it does not have 4 right angles, FALSE C If a shape does not have 4 right angles, then it is not a rectangle, TRUE D If a shape has does not have 4 right angles, then it is not a rectangle, FALSE C is correct for this one if you're looking for the contrapositive

Mmk, also what is wrong with 19 and 20?

29. jim_thompson5910

think about it if I told you that "If an animal has four legs, then it is a dog" would what I'm saying be true or false?

It would be false.

But the one I chose says that: "If an animal is a dog, then it has four legs." And I said that (in Q 20) that that was true.

32. jim_thompson5910

ok now go back to the original statement "A dog is an animal with four legs" is that true or false?

33. jim_thompson5910

you have them mixed up, that's why

That is true

35. jim_thompson5910

"A dog is an animal with four legs" is true but you said that the above translates to "If an animal has four legs, then it is a dog" which is false (a cat has four legs is a counter-example)

36. jim_thompson5910

so the two statements "A dog is an animal with four legs" and "If an animal has four legs, then it is a dog" are logically not equivalent

Right, but then the converse of it "If an animal is a dog, then it has four legs." would be true right?

38. jim_thompson5910

yes it would be true, but again you have them mixed up

39. jim_thompson5910

"A dog is an animal with four legs" translates to "If an animal is a dog, then it has four legs." both of which are true statments

40. jim_thompson5910

the converse would be "If an animal has four legs, then it is a dog" which is false

But that's not one of my answers D:

42. jim_thompson5910

what do you mean

19. What is the converse of the statement? A If an animal is not a dog, then it does not have four legs B If an animal has four legs, then it is not a dog C If an animal does not have four legs, then it is not a dog D If an animal is a dog, then it has four legs. If an animal has four legs, then it is a dog isn't in there so the only one that is actually a conversed conditional statement would be D which is true

44. jim_thompson5910

well idk what to tell you, there's a serious typo or something is missing

45. jim_thompson5910

17 should be C 18 should be true 19 should be "If an animal has four legs, then it is a dog"

Wait, why is 17 C? I know it's not B or D because those aren't conditional statements, but why would it be C?

47. jim_thompson5910

because "A dog is an animal with four legs" and "If an animal is a dog, then it has four legs." are both true statements

48. jim_thompson5910

17 is NOT A because "If an animal has four legs, then it is a dog" is NOT true

49. jim_thompson5910

"If an animal has four legs, then it is a dog" is false because a cat has four legs, but it's not a dog

50. jim_thompson5910

but flip it and it's definitely true because all dogs have 4 legs (assuming they didn't lose any)

But in Question 18, I said that A is false which is correct, correct?

52. jim_thompson5910

18 would be true

53. jim_thompson5910

because the conditional "If an animal is a dog, then it has four legs." is true

54. jim_thompson5910

so you can see how messing up one (#17) messes up the rest (#18 through #20)

Oohh, I do get it. Yikes that would've been a huge mistake D:

Thanks so much for explaining it all to me, I hope I didn't frustrate you or anything D:

57. jim_thompson5910

you're fine lol

Thanks again! I'll let you know what grade I get ^_^

I got 44/50, 6, 19, and 20 were incorrect

For each statement below (#’s 6-9) write the converse of the statement and determine if the converse is true or false. 6. If a shape is a rectangle then it is a parallelogram. A If a shape is not a rectangle, then it is not a parallelogram TRUE B If a shape is not a rectangle, then it is not a parallelogram, FALSE C If a shape is a parallelogram, then it is a rectangle, TRUE D If a shape is a parallelogram then it is a rectangle, FALSE I think #6 should've been D instead. Because a square is a rectangle ( I think), but a rectangle is not a square.

61. jim_thompson5910

hmm i knew something fishy was up with 17-20...there had to have been a typo

It is kinda weird, I'm going to have to talk to my teacher during office hours. #19 was 19. What is the converse of the statement? A If an animal is not a dog, then it does not have four legs B If an animal has four legs, then it is not a dog C If an animal does not have four legs, then it is not a dog D If an animal is a dog, then it has four legs. I chose D for 19 forgetting that I had change my answer for 17 (which made it so that they were the same statement and not conversed). But none of the other answers are correctly conversed..

And 20 was wrong because 19 was wrong so I know 20 is supposed to be False.

64. jim_thompson5910

yeah everything was dependent on 17 so if you got 17 wrong, then everything from 18 onto 20 was wrong

Yea, but I got 17 right

66. jim_thompson5910

true, so there has to be a typo in #19

Yea, she made a typo in #10 so it's likely. Thanks a whole bunch, I would've gotten a lot worse than 44/50 if you hadn't of checked it. I'll have to ask her about it after class.

68. jim_thompson5910

good idea