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March 29, 2024, 11:29:31 am

Author Topic: VCE Methods Question Thread!  (Read 4802990 times)  Share 

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colline

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Re: VCE Methods Question Thread!
« Reply #18570 on: June 04, 2020, 10:24:11 am »
+1
We have a SAC for unit 3 that says we can bring a bound reference. I was more checking - the rules apply that are the same?

The requirements should be the same as VCAA’s, but you might want to check with your methods teacher at school just in case.

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The Cat In The Hat

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Re: VCE Methods Question Thread!
« Reply #18571 on: June 04, 2020, 10:25:56 am »
0
Thanks
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Re: VCE Methods Question Thread!
« Reply #18572 on: June 04, 2020, 01:59:36 pm »
0
Hello, I have a question on Probability (chapter 9) :)

Matt has a choice of two entrees (soup or salad), three main courses (fish, chicken or steak) and three desserts (ice cream, lemon tart or cheese). Suppose he has the option to omit the entree and/or the dessert altogether. Find the chance that:
a) he chooses all three courses        b) he chooses only two courses.

The answer for the first is 1/2 and for the second is 15/36 apparently. I haven't done Probability for such a long time so I'm not really used to it  ¯\_(ツ)_/¯
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The Cat In The Hat

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Re: VCE Methods Question Thread!
« Reply #18573 on: June 04, 2020, 03:05:12 pm »
+3
Hello, I have a question on Probability (chapter 9) :)

Matt has a choice of two entrees (soup or salad), three main courses (fish, chicken or steak) and three desserts (ice cream, lemon tart or cheese). Suppose he has the option to omit the entree and/or the dessert altogether. Find the chance that:
a) he chooses all three courses        b) he chooses only two courses.

The answer for the first is 1/2 and for the second is 15/36 apparently. I haven't done Probability for such a long time so I'm not really used to it  ¯\_(ツ)_/¯

Are you asking how it works that way?

a) Presumably he could choose for entree soup, salad or nothing. The main courses, he could choose three different options but not nothing. He has four options for dessert, ice cream, lemon tart, cheese or nothing.
Thus, he has a 2/3 option of getting entree, a 3/3 option of getting main course, a 3/4 option of getting dessert. Multiply 2/3 and 3/4 together, you get 6/12, which simplifies to 1/2.

b) 1/3 chance of no entree, 1/4 chance of no dessert. Don't multiply them together here or that would be finding when he would have only one course. So I think what you want there is multiplying no entree and dessert. Then multiply entree and no dessert. Then add the probabilities together. There may be an easier way of doing this.
no entree and dessert: 1/3 * 3/4 = 3/12 = 1/4
entree and no dessert: 2/3 * 1/4 = 2/12 = 1/6
1/4 + 1/6 = 6/24 + 4/24
= 10/24 = 5/12
Because there are three options of main course, we have 3/3 gets this successfully.
Multiply 3/3 by 5/12
= 15/36

Hope this was what you wanted... hope it's right, too, I haven't done Probability for ages. Maybe someone else should check.
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keltingmeith

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Re: VCE Methods Question Thread!
« Reply #18574 on: June 05, 2020, 05:36:38 pm »
+1
Hope this was what you wanted... hope it's right, too, I haven't done Probability for ages. Maybe someone else should check.

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Re: VCE Methods Question Thread!
« Reply #18575 on: June 08, 2020, 03:30:19 pm »
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Hi can someone please help me how to show algebraically that f(x) 2x+5/x=2 is 2+1/x+2? (the / means is a fraction)

colline

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Re: VCE Methods Question Thread!
« Reply #18576 on: June 10, 2020, 12:44:39 pm »
+7
Hi can someone please help me how to show algebraically that f(x) 2x+5/x=2 is 2+1/x+2? (the / means is a fraction)

It took me a while to understand you question haha! I think you mean, why does (2x+5)/(x+2)=2+1/(x+2)?

Basically, 2x+5 can be re-written as 2(x+2)+1 (if you expand the brackets and simplify, you’ll see the two are the same thing).

So now you have (2(x+2)+1)/(x+2) which is the same as 2(x+2)/(x+2)+1/(x+2). The (x+2) on the first fraction cancels out and you’re left with 2+1/(x+2).

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keltingmeith

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Re: VCE Methods Question Thread!
« Reply #18577 on: June 10, 2020, 05:44:53 pm »
+5
Hi can someone please help me how to show algebraically that f(x) 2x+5/x=2 is 2+1/x+2? (the / means is a fraction)

Adding to colline's great answer - you can also just do straight polynomial division to prove this, as well.

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Re: VCE Methods Question Thread!
« Reply #18578 on: June 12, 2020, 09:48:07 am »
0
How do you find the left and right limit non-graphically? What exactly are they? Someone please explain this stuff to me. I don't understand :(
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Re: VCE Methods Question Thread!
« Reply #18579 on: June 13, 2020, 07:04:08 pm »
0
Hey,

Here's the question:

A teacher gives the class a test consisting of 10 multiple-choice questions, each with five alternatives. Use simulation to estimate the probability that a student who guesses the answer to every question gets at least five correct.

I do not understand how you are supposed to work out the answer, or how they got to the answer of approx 0.0009.

Any help appreciated.

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Re: VCE Methods Question Thread!
« Reply #18580 on: June 13, 2020, 07:27:48 pm »
+1
Hey,

Here's the question:

A teacher gives the class a test consisting of 10 multiple-choice questions, each with five alternatives. Use simulation to estimate the probability that a student who guesses the answer to every question gets at least five correct.

I do not understand how you are supposed to work out the answer, or how they got to the answer of approx 0.0009.

Any help appreciated.

what did you get as your answer?

also this is unrelated but how is your school up to probability already  :O
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Re: VCE Methods Question Thread!
« Reply #18581 on: June 13, 2020, 08:01:08 pm »
0
what did you get as your answer?

also this is unrelated but how is your school up to probability already  :O
0.0327935

or 3.28%

This is methods 1/2 ;)

Arun1693

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Re: VCE Methods Question Thread!
« Reply #18582 on: June 13, 2020, 08:39:01 pm »
0
I know this has nothing to do with questions on methods, but here it goes:
 I have an idea for my bound reference, that is if I could attach two books and bind together with a lot of sticky tapes. I am not sure if it complies with the VCAA guidelines. Does the SACS follow the same guidelines as the exams?
For context here is the guideline from VCAA on bounded references: https://www.vcaa.vic.edu.au/assessment/vce-assessment/materials/Pages/index.aspx#01
Technically it is still one bound reference with a single spine.
Can you please shine some light on this? Would be appreciated.
I have attached a picture of what I am thinking of.
Thank you in advance.

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Re: VCE Methods Question Thread!
« Reply #18583 on: June 13, 2020, 10:18:22 pm »
0
I know this has nothing to do with questions on methods, but here it goes:
 I have an idea for my bound reference, that is if I could attach two books and bind together with a lot of sticky tapes. I am not sure if it complies with the VCAA guidelines. Does the SACS follow the same guidelines as the exams?
For context here is the guideline from VCAA on bounded references: https://www.vcaa.vic.edu.au/assessment/vce-assessment/materials/Pages/index.aspx#01
Technically it is still one bound reference with a single spine.
Can you please shine some light on this? Would be appreciated.
I have attached a picture of what I am thinking of.
Thank you in advance.
Im pretty sure this is allowed, I remember seeing quite a few of those last year

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Re: VCE Methods Question Thread!
« Reply #18584 on: June 15, 2020, 10:33:34 am »
0
Technically it is still one bound reference with a single spine.
True, but you have to make sure it's within A4 still. If 'tis, go for it. I'll probably do the same if I run out of time to make a bound book - just bind the books for my two SACS together.
VCE 20
HHD MM Revs (F/R) Eng T&T
ATAR 85
Uni 21-24: BNursing/BMidwifery @ Deakin
Y1T2:
HNM102
HNN122 (double)
HNN114
I hope I don't fail....
Listens to Amira Willighagen and Alma Deutscher and a little Marjolein Acke
~English - PM for P&P/creatives help~
Creative excerpts
Nur/Mid uni journal

For Narnia and for Aslan!

she/her

Basically inactive now. May change. Have a nice day.