IGCSE MATHS Doubts

[Vin]

How would you do this.

The MS says 5k.

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]

5^y X 5¹ = 5^y+1   (Law of indices)

Therefore : 5^y= K, Hence K*5¹

Thus the answer derived is = 5k

By the way, Which paper is this question from?

winter 2003 thanks !

[Vin]

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

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]

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

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

[Vin]

easy...

do you mind explaining how ..



@ xMilishax ..Adzel  has done it here .. scroll down .. but i still dont get it

https://studentforums.biz/index.php/topic,7086.510.html

@Baladya .. they'll ban u for profanity .. !!

[Baladya]

Can someone pls help me with this question?

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

Rotate it like they said. Then put ur compass on point B and open it to point D. Rotate the compass until it meets D'

[The Golden Girl =D]

poeple plz help me in this .......cuz my exam is in two hours .............. how to find x if y=10 to the power of x

plz answer ASAP!!!!  

thx in advance

[Baladya]

poeple plz help me in this .......cuz my exam is in two hours .............. how to find x if y=10 to the power of x

plz answer ASAP!!!!  

thx in advance

This doesnt make sense. Show us the question or give a link. Is this a graph or smth?

[xMilishax]

Rotate it like they said. Then put ur compass on point B and open it to point D. Rotate the compass until it meets D'

Thank you. 

[Baladya]

do you mind explaining how ..



@ xMilishax ..Adzel  has done it here .. scroll down .. but i still dont get it

https://studentforums.biz/index.php/topic,7086.510.html

@Baladya .. they'll ban u for profanity .. !!

Hey Vin, but Adzels explanation is diff from the one i did. Whose right 0.0 I think mine makes more sense...

[Ghost Of Highbury]

poeple plz help me in this .......cuz my exam is in two hours .............. how to find x if y=10 to the power of x

plz answer ASAP!!!!  

thx in advance

shud i answer this or ur exam is over? i remember i have alreeady answered this..

[Q80BOY]

Best of luck in your math exam guys .. do your best!

And just a reminder, when you return from your exam please don;t come here to discuss it, we will only allow discussions after 24 hours.

Thanks and good luck!  

[PeaceMaker]

Anybody taking this exam and feeling really stressed to the point you feel like your going to reset it? Well, i do and i just hope everything would go well but with such mistakes i dont know, do they give marks for working out and all? Damn, i should have studied more, oh well atleast the subject is in my grasp to retake it if anything happened (Inshallah i wont)

Im going to take it in about an hour and a half, good luck all oo allah yewafegna inshallah.

Did anybody do the exam? if so is it easy? without saying the contents of the papers of course.

[xMilishax]

do you mind explaining how ..

@ xMilishax ..Adzel  has done it here .. scroll down .. but i still dont get it

https://studentforums.biz/index.php/topic,7086.510.html

Oh, this is different! Umm..which one is correct? I don't get it.. :\ In the mark scheme it says - arc through D radius BD, some indication that the arc is from D to D1.  

Pls help!