Some miscallenous multi choice questions

[Fermat1]

on question 20, I think the answer is (A) because wouldn't AD then be perp to BD?

In picture 2 question 4 I got (E) because the line should start at -2.5 ,not -3

In picture 2 question 5, I got (B). Seems like maybe a trick question.

In picture 3 question 6, I got (C). Is that right?

In picture 3 question 11, I got (C) because there's no need for OP and XP to be the same length. I reckon (A) is a slight misprint and should be OAP

In picture 3 question 12, I got (B)

In picture 4 question 14, I got (E). I'm not sure though

Would really appreciate clarification on these particular questions. Thanks

 

[Fermat1]

please help. I think my questions are clear enough. Just seems I never get help around here

 

[Greg]

For question 20, $\overline{AD}$ is perpendicular to $k$ if $\triangle DBC$ is in the plane. I don't think any of the given conditions make it necessary that $\triangle DBC$ is in the plane.

It's not clear (at least to me) exactly how you are referring to the questions. Try starting with the first image and go over the questions you are concerned with there, showing your work/ideas (as you have already done for some of the questions). I'm willing to help as best as I can if you are willing to make an effort to clarify things. I'm sure others will help too.

 

[MarkFL]

please help. I think my questions are clear enough. Just seems I never get help around here

You have posted a huge number of questions while our rules state to post no more than 2 question in your initial post. Follow-up questions are then allowed if they pertain to the original two.

When you post a bunch of questions, then the thread can become convoluted and people are simply less likely to be willing to help when confronted with a wall of questions. This is why we have a rule regarding this...it not only helps you get help in a timely manner but makes giving help easier for our helpers.

I suggest cropping the images to contain only those question with which you need help and then post each in a separate thread. And post the images inline rather than as attachments at the bottom of the post so that they are part of the body of the post. A good presentation is much more likely to garner help.