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Mathematics (HELP)

15) a x10^4 + a x10^2 = 24 240 where a is a number.
Work out a x10 ^4 x a x 10^ 2
Give your answer in standard form.
[2 marks)
(edited 6 years ago)
Well observe firstly that ax10^4 = 24x10^3 --> ax10^4 = 2.4x10^4 --> a=2.4

You can finish the question off.
Original post by thekidwhogames
Well observe firstly that ax10^4 = 24x10^3 --> ax10^4 = 2.4x10^4 --> a=2.4

You can finish the question off.


I'm really confused with what you have done
Original post by GCSE_18
I'm really confused with what you have done


The question says:

ax10^4 + ax10^2 = 24 240.

I'll provide some more answers:

Method 1:

Observe ax10^2 = 240 --> 100a=240-->a=2.4 (or ax10^4 = 24000 --> a=2.4)

Method 2:

10,000a + 100a = 24240 --> 10,100a=24240 --> a=2.4

Method 3:

a(10^4) + a(10^2) = 10^2[a(10^2 + a) = 100(101)a = 24240 --> 101a=242.4-->a=2.4
Original post by thekidwhogames
The question says:

ax10^4 + ax10^2 = 24 240.

I'll provide some more answers:

Method 1:

Observe ax10^2 = 240 --> 100a=240-->a=2.4 (or ax10^4 = 24000 --> a=2.4)

Method 2:

10,000a + 100a = 24240 --> 10,100a=24240 --> a=2.4

Method 3:

a(10^4) + a(10^2) = 10^2[a(10^2 + a) = 100(101)a = 24240 --> 101a=242.4-->a=2.4


Oh make sense now thank you soo much.
Original post by GCSE_18
15) a x10^4 + a x10^2 = 24 240 where a is a number.
Work out a x10 ^4 x a x 10^ 2
Give your answer in standard form.
[2 marks)

Hi there :wavey:
I've moved your thread to the Maths forum where hopefully you'll get more answers :smile: In future, it's best to select the subject from the list here and create a thread in there instead :yep: If you want to see where threads belong, check out this thread :smile:
Original post by Lemur14
Hi there :wavey:
I've moved your thread to the Maths forum where hopefully you'll get more answers :smile: In future, it's best to select the subject from the list here and create a thread in there instead :yep: If you want to see where threads belong, check out this thread :smile:


Thank you so much, I appreciate it.
Original post by GCSE_18
Thank you so much, I appreciate it.

No problem :smile:

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