Online Course Discussion Forum

MCII-B Typo

 
 
Picture of James Shi
MCII-B Typo
by James Shi - Thursday, November 12, 2020, 10:44 PM
 

For Quick Response Question 8.17 in Math Challenge II-B Geometry, I think there is a typo. I don't think the numbers are possible. Is this a mistake or am I solving the problem incorrectly? Thank you.

 
Picture of Jyoti Mujumdar
Re: MCII-B Typo
by Jyoti Mujumdar - Friday, November 13, 2020, 3:18 PM
 

I'm not a teacher, but I did this question. Using power of a point, you should be able to find the answer.

Remember, AP*BP=CP*DP.

Speaking of which, if a teacher sees this, I put 32/5 for question 8.17 and it was marked wrong. The correct answer said 6.4, which is equivalent to 32/5. Can you please fix this?

Picture of Dr. Kevin Wang
Re: MCII-B Typo
by Dr. Kevin Wang - Sunday, November 15, 2020, 11:01 AM
 

Great answer (everyone is encouraged to answer questions---you don't have to be a teacher)!  The question should be read carefully to come up with the correct diagram.

I have updated your Quick Response score for this question.  The system doesn't recognize fractions when you fill in a blank, so make sure to answer in decimal for Quick Response questions in your homework. We will update the question to indicate that.

Picture of Jyoti Mujumdar
Re: MCII-B Typo
by Jyoti Mujumdar - Sunday, November 15, 2020, 11:11 AM
 

Okay. Thank you!