Question

Could someone check this please? I'd appreciate it :D

Answer 1

Please? This is really important...

Answer 2

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

Answer 3

5 is correct

but 6 is not

Answer 4

same with 7, #7 is incorrect

Answer 5

8 is incorrect as well

Answer 6

9 is incorrect too

I think you mixed up the terms converse and inverse

Answer 7

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

Answer 8

10 is incorrect, you mixed up inverse and contrapositive

Answer 9

11 is correct

Answer 10

12 is correct

Answer 11

13 is correct

Answer 12

14 is correct

Answer 13

15 is correct

Answer 14

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.

Answer 15

16 is a fallacy...which a lot of people mix up

16 is not a valid argument

Answer 16

Alright, I fix that

Answer 17

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

Answer 18

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)

Answer 19

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

Answer 20

19 is wrong

Answer 21

so is 20

Answer 22

21 is correct

Answer 23

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

Answer 24

23 through 25 are all correct

Answer 25

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.

Answer 26

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

Answer 27

Mmk, also what is wrong with 19 and 20?

Answer 28

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?

Answer 29

It would be false.

Answer 30

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.

Answer 31

ok now go back to the original statement

"A dog is an animal with four legs"

is that true or false?

Answer 32

you have them mixed up, that's why

Answer 33

That is true

Answer 34

"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)

Answer 35

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

Answer 36

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

Answer 37

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

Answer 38

"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

Answer 39

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

Answer 40

But that's not one of my answers D:

Answer 41

what do you mean

Answer 42

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

Answer 43

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

Answer 44

17 should be C

18 should be true

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

Answer 45

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?

Answer 46

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

Answer 47

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

Answer 48

"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

Answer 49

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

Answer 50

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

Answer 51

18 would be true

Answer 52

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

Answer 53

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

Answer 54

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

Answer 55

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

Answer 56

you're fine lol

Answer 57

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

Answer 58

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

Answer 59

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.

Answer 60

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

Answer 61

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..

Answer 62

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

Answer 63

yeah everything was dependent on 17

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

Answer 64

Yea, but I got 17 right

Answer 65

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

Answer 66

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.

Answer 67

good idea