Qualification > Math

IGCSE MATHS Doubts

<< < (109/240) > >>

Vin:

--- Quote from: Ari Ben Canaan on May 12, 2010, 07:07:57 am ---How would you do this.

The MS says 5k.

--- End quote ---

whenever a power to any any number is added by 1 .. the number automatically gets multiplied by 1 .. like for eg

22
= 2 x 2= 4

22+1
= 23
= 2 x 2 x 2
= 8

and so on ..  ;)

holtadit:

--- Quote from: contraentry on May 12, 2010, 07:14:16 am ---5y X 51 = 5y+1   (Law of indices)

Therefore : 5y= K, Hence K*51

Thus the answer derived is = 5k

By the way, Which paper is this question from?

--- End quote ---

winter 2003 thanks !

Vin:

--- Quote from: Baladya on May 12, 2010, 07:14:07 am ---GUYSSS PLZZZZ HELPPP!!!!

There are 10^9 nanoseconds in 1 second.
Find the number of nanoseconds in 5 minutes, giving your answer in standard form.

I multiply 10^9 x 5 x 60 = My calculator say 3x10^12. But in mark scheme its 3x10^11????

Plz help :S :S

--- End quote ---

which calci do u use .. ?? i get 3x10^11 in my calci .. try 1000000000 * 60 * 5 ..

xMilishax:
Can someone pls help me with this question?

Q5  -->  http://www.freeexampapers.com/FreeExamPapers.com_.php?__lo=SUdDU0UvTWF0aHMvQ0lFLzIwMDggTm92LzA1ODBfdzA4X3FwXzAyLnBkZg==

Baladya:

--- Quote from: ~VIN1094~ on May 12, 2010, 07:17:52 am ---which calci do u use .. ?? i get 3x10^11 in my calci .. try 1000000000 * 60 * 5 ..

--- End quote ---

OMG. I did 10x10^9 not 10^9 0.0 >< OMG I m gonna fail today cuz of stupid mistakes :S :\

Navigation

[0] Message Index

[#] Next page

[*] Previous page