All Answers

+118725

Hi Jedithious,
I was pondering the same question.
Did you make up the numbers without thinking about the result?
If you did then I think that you could play but maybe you should leave it at least a couple of hours before you post your solution.
Just to let other people have a chance first. Does that sound reasonable?

If anyone would like to voice an objection or an oppinion please do so.
If you do you'll get 5 points for your participation!
Melody.

p.s. Where did you go? I love travelling!

PUZZLE 3
3,7,7,25,75,100 Magic number 734
This is Jedithious's Puzzle and no one has solved it yet!

MelodyDec 31, 2013

+154

Hello Melody,
Yes, I just got back from a long trip. Was missing this place...
Sure, I'd like to offer the numbers. Will I still be able to participate/play, though, for that round?

7, 7, 3, 25, 75, 100 where the magic number is 734

JedithiousDec 31, 2013

+118725

Jedithious:
(9*50) - (2*25) - 10 - 6 = 384

I really like this game.

gb4242. (1 win - 10points)
Jedithious (1 win- 10 points)

Hi Jedithious,
I haven't seen you about for a while. I am glad that you are back. And that you like this game. I like it too!
And you have posted a great solutions! Yours was a full monty too - you used all the numbers!
I had a different solution.

[ 50 - ( 9+2) ] x 10 - 6 = 384

Hey Jedithious or gb4242,
Do one of you want to offer the numbers for the next round?

MelodyDec 31, 2013

+154

(9*50) - (2*25) - 10 - 6 = 384

I really like this game.

JedithiousDec 31, 2013

+118725

kitty<3:
lol nice hairdo
Happy New Year! <3

GEE THANKS KITTY !!

I FEEL LIKE A FILM STAR !!

I am gonna to have a fab night!

You have a great night too!!

MARGE

This is Marge here the stupid system won't let me log in so I had to use Melody's login.

MelodyDec 31, 2013

+5478

lol nice hairdo
Happy New Year! <3

kitty<3Dec 31, 2013

+118725

It is new years eve!
Aunt Marge is all excited, she's going to paint the town red with her friends (that means she is looking forward to an awesome night)
She has had her hair done again!

She wants to know if you like it !!
I do, I think it looks great!

Marge3.JPG

MelodyDec 31, 2013

+118725

+19

6,2,9,10,50,25
and the magic number is 384

This one was hard. That is the way it is sometimes.

Try making 390 and then take away the 6.
Hint: How do you think the 10 could be used?

If you want more direction then ask for it.
You get 5 points just for showing interest!
--------------------------------------------------------------------------------------------
(I'll give you 5 points for trying and 10 for a win)
Good work gb4242. (1 win - 10points)

MelodyDec 31, 2013

#43

+118725

random260:
10/250 = 0.04c each
b) 6.48/12 = 0.54 c each

Very good Random.
Your initial working, is excellent
I did want you to show me that you got it right by saying something like (check $0.04 x 250 = $10 ->great 4c is correct)
also
I should point out that the lollies are not 0.04c. They are $0.04 or 4c. Please be careful about this in the future.

For the eggs, I offer the same praise and the same criticism.
------------------------------------------------------------------------------------------------------------------------------------------
Now I am going back to the fruit. This time I want 3 dozen bananas.
The bananas are bundled in nets of 2 (2 bananas per net) The cost is $4.08 for a dozen.
a) How many nets make up a dozen bananas. You already told me that this was 12/2 = 6 nets
b) If r is the cost per net, what is r ?
c) If n is the number of nets that I need to buy, what is n?

Make sure you include, r= and n= and all your working.
You will probably get this question again next time (with a little more instruction).
For now you can do it your way. But show your working.
ps I know where i am trying to go with this so be patient.

Answer the questions first but then,
If you really want to think ahead, think about how you could have used the 6 to get these answers.

MelodyDec 31, 2013

Dec 30, 2013

#42

10/250 = 0.04c each
b) 6.48/12 = 0.54 c each

GuestDec 30, 2013

+118725

anon2102:
Find all real numbers x,y,z>=1 satisfying min(sqrt(x+xyz), sqrt(y+xyz), sqrt(z+xyz))=sqrt(x-1)+sqrt(y-1)+sqrt(z-1)

The only answer is x=5/4, y=2, z=2

MelodyDec 30, 2013

+118725

+11

No-one else wanted to have a go - that's a little disappointing. (Maybe you did have a go but didn't get an answer. Let me know if this is the case - I'll give you 5 points for trying)
Good work gb4242. (1 win - 10points)

PUZZLE 2
6,2,9,10,50,25
and the magic number is 384

It might be easy, it might be impossible, I haven't even tried to do it yet! (I just wrote the numbers down as i thought of them)
(Added later: I just did it, It might be hard but it is not impossible)

Maybe next time someone else might like to give us the numbers. Maybe the winner?
the rules for the numbers are
There must be 6 number
2 or more of them must be little ones from the set {1,2,3,4,5,6,7,8,9,10}
the remainder must be big ones from the set {25,50,75,100}
You can use the same little number twice if you want to.
I think the magic number should be between 50 and 999 (I think that should work alright)

Happy calculations and good luck.

(If anywone else wants to introduce a different number game I think that would be good)

MelodyDec 30, 2013

+118725

googoo:
what is the period of a record whos frequency is 45RPM

RPM stands for revolutions per minute.

Frequency (f) = cycles per time period (1 cycle/sec = 1 Hertz)

Period (T) = time per cycle

that is
f = 1/T or T=1/f

So if the frequency is 45 Revs/1minute
then
Period = 1min/45revs = 1/45 minutes (per revolution) = 1.33seconds (correct to 2 dec places)
It is really seconds per revolution but the 'per revolution' part is just understood, you don't include it.

You could take a look at this web page. There are question on the site (with pop up answers) so that you can check if you understand.
http://www.physicsclassroom.com/class/waves/u10l2b.cfm

MelodyDec 30, 2013

+118725

gjhhkj:
How would you rearrange the following equation to make it equal to theta

0 = 14 * tan(theta) * 5 + 0.5 * -9.81 * 5^2

I think that you should clean up (simplify) the right hand side first. Then it might be easier to see what to do next.

MelodyDec 30, 2013

+118725

Sometimes it looks like a ^ and sometimes it looks like xy (the y should be litter and up the top). Does that help?

MelodyDec 30, 2013

#41

+118725

Hi Random,
I am glad that you are still with me,

This was the question:
The bananas are bundled in nets of 2 (2 bananas per net)
The cost is $4.08 for a dozen. And I want 14 bananas.
a) How many nets make up a dozen bananas Your answer: 12/2 = 6 Perfect!
b) If r is the cost per net, what is r ? Your answer: Not so good
c) If n is the number of nets that I need to buy, what is n? Your answer: 7 good.

Your answer for part b
b) 14/4.08 = 1 banana
so 1 banana= 3.43
so 3.43 x 2 = $6.86 per net

Lets think about this.
If 1 banana was $3.43 then a dozen bananas would be $3.43 x 12 = $41.16 BUT a dozen bananas are only $4.08, so your $3.43 per banana can't be right.
Think about the words and use them to help you get these sorts of questions correct.
If you want dollars per banana You have 4.08 dollars per 12 bananas.
The per is the same as divide.
so you have
4.08/12 dollars per banana = $0.34 per banana = 34c each
check 12 x 34c = 408c = $4.08 so they must be 34c each!
-------------------------------------------------------------------------------------------------------------------------------------
I'll get back on track later but this is really important for you to know.
REMEMBER: It is "cost per item"
a) If I buy 250 lollypops for $10. How much are they each (Show your working - that is the important bit)
show me how you checked your answer
b) If I buy a dozen eggs for $6.48 How much is each egg (Show your working - that is the important bit)
show me how you checked your answer.

Please answer these 2 questions for me.

MelodyDec 30, 2013

+5478

so 8 times 1/9
would be 8/1 * 1/9
=(8*1) divided by (9*1)

=8/9

kitty<3Dec 30, 2013

Dec 29, 2013

#40

a) 12/2 = 6 nets
b) 14/4.08 = 1 banana
so 1 banana= 3.43
so 3.43 x 2 = $6.86 per net
c) 14/2 =7 nets

GuestDec 29, 2013

+118725

+11

gb4242:
(2*100*5)-50+3 = 953

OOps for previous wrong operator - typo

Excellent work gb4242 - that's 10 points for you.

My answer was very different so I should be able to have at least 1 more winner!

MelodyDec 29, 2013

+14

+11

(2*100*5)-50+3 = 953

OOps for previous wrong operator - typo

gb4242Dec 29, 2013

+14

+11

(2*100*5)-50-3 = 953

gb4242Dec 29, 2013

+118725

Poiuytrewq:
(-0.5)(9.8)(0.256^2) + V (0.256) = 0
How would I rearrange that and solve for V?

Start by subtracting V(0.256) from both sides.

Then think about how to get rid of the 0.256 so that V will be on its own.

MelodyDec 29, 2013

GuestDec 29, 2013

7 1/4 + 12.5 + 8 + 10 1/4

First you will have to convert them all to either decimals or fractions. I prefer to add them as decimals.

7.25 +12.5+8+10.25= 38

GuestDec 29, 2013

-3|x+7| = -12

Divide both sides by -3, which gives us:
|x+7| = 4

Since the absolute value of x+7 is 4, x+7 could be either -4 or +4, since either one will give us an absolute value of 4.
Therefore, substituting them both separately, we get:

x+7 = 4
Subtract 7 from both sides.
x=-3

x+7 = -4
Subtract 7 from both sides.
x = -11

So . . .
S={-3,-11}

Substituting -3 or -11 back into the original equation makes the equation true.

GuestDec 29, 2013

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