Recent content by freakinout

ok well heres an example... if u catch 120 fish from a lake.. tag them then release then.... then u catch a randome sample of 80 fish and 6 are tagged... find the population of fish in the lake... let x represent the population and use a cross multiplying technique... 120...

1m^2 = 80 grams 1m^2 = 0.08kg now work out how many metres square in each sheet of paper = 0.21m^2 x 0.3m^2 = 0.0623m^2 now find out how much each sheet weighs = 0.063m^2 x 0.08 kg = 0.00504kg per sheet so...

yep ppl $5.96 is correct!!! thatnx alot for ur help.... u ppl are smart and have nothin to worry about!

wait why did u do the (1/499) x 1000 ?? maybe we should try another question!?

lol well thats three diferent answers.... im so confused!!!! maybe we could try with another similliar question that we KNOW the answer to lol... any one got any???

yep that males sense.. thanks alot hun i owe u one hsc mark! let me know if u need help with anything!

ok heres the question and i dont know how to do it... Dana bought 2 tickets in a raffle... the tickets cost $5 each. 500 tickets were sold and the 1st prize is $1000. calculate her financial expectation..

well yeh if ur gna use the formula on the sheet then u have to solve it to find theta but i hate doing thta too thats y i showed u the other way lol... um im not sure how else to explain it .. let me think about it...

you have to didvide by 12 first.. for example.. if it was 24% pa then it would become 2% per month.... but wen working out the ineterest u cant use percentage it has to be a decimal... therfore u divide by 100 aswell.....

using the circumfrance of a circle.. = pie x diamter = pie x 20 = 62.831... the arc lenth of the cirlce (12) is a part of that circumfrence... therefor if u find the percentage...

i dont know how to do percentage error??? anyone gotta breif explanation on how to get it? with an example if possible?? thanks darls!!

well to find the volume of any shape its area times height so first find out how to find the area of a trapeze and times it by the thickness btw i dno the formula for trapeze let me know if u find it

ok for the first question... the population increased by 20% so it went from 100% to 120%...... then it decreased by 10% of the 120... so 10% of 120 = 12% therefore the population at the end of two year is 120% - 12% = 108% now u can see it went from 100% to 108% therefore increased by 8...

yeh definiently need to know them.... coz it'll make the qestions easier to comprehend if u understand terminology

thanx for trying but i still don get it... so much for being first in course ... its not showing... lol ..... anymore questions guys?