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Mathematics 22 Online
OpenStudy (devonhoward15):

Which answer is the contrapositive of the conditional statement, and correctly shows if the conditional statement is the contrapositive are true or false?

OpenStudy (devonhoward15):

@Vocaloid

OpenStudy (mathstudent55):

Conditional: If p, then q. Converse: If q, then p. Inverse: If not p, then not q. Contrapositive: If not q, then not p.

OpenStudy (mathstudent55):

Start with your given conditional. Look above at how to arrive at the contrapositive. What is the contrapositive of your original conditional?

OpenStudy (mathstudent55):

Conditional: \(\sf If~ \color{red}{p}, ~then ~\color{green}{q}.\) Conditional: \(\sf If~\) \(\color{red}{5x \ne 30}\)\(\sf, ~then ~\)\(\color{green}{x \ne 6}\).

OpenStudy (devonhoward15):

if 5x does not =30, then x does not =6

OpenStudy (mathstudent55):

For the contrapositive you do two things: 1. Negate the hypothesis and the conclusion. 2. Switch the hypothesis and the conclusion.

OpenStudy (mathstudent55):

You have the conditional that you just wrote. Now negate the hypothesis and negate the conclusion. The original hypothesis is: \(5x \ne 30\). How do you negate that?

OpenStudy (devonhoward15):

i got the anwser... i got if x=6, then 5x=30. the conditional and contrapositive are both true

OpenStudy (mathstudent55):

Correct.

OpenStudy (devonhoward15):

Thanks for all the help @Vocaloid @mathstudent55 ... i got all 44/44 correct

OpenStudy (mathstudent55):

Contrapositive: \(\sf If~\)\(\color{green}{not~q}\)\(\sf,~then ~\)\(\color{red}{not~p}\). Contrapositive: \(\sf If~\)\(\color{green}{x = 6}\)\(\sf,~then ~\)\(\color{red}{5x = 30}\).

OpenStudy (mathstudent55):

You're welcome. Congrats on your high grade!

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