hard questions? (2 Viewers)

[connie]

just thought i start a thread dedicated to hard questions, so if you have any post them here

 

[honky tonk]

This isn't a hard question per se, but I got it wrong in a multiple choice and don't exactly know why:

The Sports Club's cricket oval is in the shape of an ellipse. The width of the oval is 200m and the height is 160m. At the end of the season, the greenkeeper is going to spread fertilizer over the oval. One bag of fertilizer covers 150m. How many bags of fertilizer will the greenkeeper need?

(A) 168
(B) 377
(C) 670
(D) 25133

 

[connie]

the answer should be 168?
area of an ellipse = pie x a x b
= pie x 100 x 80
= 25132.74123

number of bags needed = area/area 1 bag covers
= 25132.74123/150
= 167.5516082

therefore 168 bags would be needed

 

[honky tonk]

Originally posted by connie
the answer should be 168?

You agree? Excellent! Thanks, that saved me some panic attacks.

 

[connie]

who says it shouldn't be?

 

[cmaddogz]

HEY - just thought i'd let you know i'm in here too! haha.... as i said in the other thread, if i find some hard questions, ill let you know... how many hours u doing a day? what other subjex u do???

- M A D D O G Z -

 

[honky tonk]

Originally posted by connie
who says it shouldn't be?

My teacher and about 20 students.. I just needed confirmation.

 

[connie]

Originally posted by cmaddogz
HEY - just thought i'd let you know i'm in here too! haha.... as i said in the other thread, if i find some hard questions, ill let you know... how many hours u doing a day? what other subjex u do???

- M A D D O G Z -

i haven't done much study yet, been sick over the last week and been sleepin in or jus reading stuff on here...
my other subjects are;

economics
legal studies
ipt
business

oops and advanced english ofcourse
none of the hard ones!

 

[kieransgirl]

wow i really dont know what they did cause even if they didnt recognize that the major and minor axis' were 1/2 or the lenght/ width, there answer still wouldnt be right!!!

 

[connie]

they did;

pie x 200 x 160 = 100530.9649

100530.9649 / 150 = 670.2064328

 

[Misturi]

I have a question....l know the answer, but l would like to know the steps that people took to get their answer. I can normally do these questions quite easily, but this one l had a bit of trouble with (not helping that l was stressing and nervous)

here goes..

Use the formula s= ut + at to find the value of s if u=0, t=5, a=10

Can someone please tell me what answer they got and the working out...thank you!

 

[saw_dust_farmer]

s= ut + at <-- substitute the correct numbers in

s = 0 x 5 + x 10 x 5 <-- now just divide the question up

s = (0 x 5) + ( x 10 x 5) <-- its now divided up grouping the x's together

s = 0 + 125 <-- this is a no brainer

s = 125 <-- the answer


geez i hope that right or im stuffed but im sure it is

 

[kimmeh]

yup ur correct

its just a matter of subbing values into the equation

 

[Misturi]

Thank you so much!

 

[Jacko]

omfg you retards...

 

[Misturi]

ummm..why are we retards? Because were trying to learn? Or because were helping each other out?

 

[Jacko]

1 + 1 = 2
2+2 =4

duhhhhhhh
im doing general maths

 

[Misturi]

yournot so smart either then, and your from the north...pfft.

 

[Jacko]

lol yeah
Sydney Boys
im a retard... sorry
and wtf does living in the North have to do with anything...
grow up your giving the rest of the female gender a bad name
go back in the kitchen and bake me some pie.

 

[Misturi]

Sorry l shouldn't have stereotyped north people. I mean they do it to us westies...but anyways..

l'd rather eat cat shit than bake you a pie.