PDA

View Full Version : Need help with maths. D:

12-03-2015, 07:26 AM
Please solve this and explain it to me. I'm currently going to have the first term exam 😵

Find x.

100^x=10
32^x=2
16^x=4
32^x=8

DropeTD
12-03-2015, 07:29 AM
Please solve this and explain it to me. I'm currently going to have the first term exam 😵

Find x.

100^x=10
32^x=2
16^x=4
32^x=8

Is ^ multiplied or duvided.

FrostxMC =^.^=
12-03-2015, 07:33 AM
Please solve this and explain it to me. I'm currently going to have the first term exam 😵

Find x.

100^x=10
32^x=2
16^x=4
32^x=8

1. 100^x=10
x=-10
2. 32^x=2
x=-16
3. 16^x=4
x=-4
32^x=8
x=-4

These may be wrong because you really didn't tell us anything about the questions at all. You have to at least have a key to tell us what ^ is. I used it as 'To the power of'.

Gurregris
12-03-2015, 07:40 AM
1. 100^X=10

2. 32^X=2

3. 16^X=4

4. 32^X=8

FrostxMC =^.^=
12-03-2015, 07:44 AM
1. 100^X=10

2. 32^X=2

3. 16^X=4

4. 32^X=8

It was by fractions? If it was like that then you don't even need help, do you? It's simple as heck this way. I thought ^ means 'To the power of'

Clincher
12-03-2015, 07:48 AM
Please solve this and explain it to me. I'm currently going to have the first term exam 😵

Find x.

100^x=10
32^x=2
16^x=4
32^x=8

here's the way!

1. 100^x=10
10^2x=10^1
then 2x=1
so x=1/2

2. 32^x=2
2^5x=2^1
so 5x=1
x=1/5

3. 16^x=4
4^2x=4^1
2x=1
x=1/2

4. 32^x=8
2^5x=2^3
so 5x=3
x = 3/5

Keyword: we should make the basis (or what u called) same so we can make the power (superscript) same too

:hat:
:hat:

Gurregris
12-03-2015, 07:48 AM
It was by fractions? If it was like that then you don't even need help, do you? It's simple as heck this way. I thought ^ means 'To the power of'

It does mean "to the power of"...

Clincher
12-03-2015, 07:50 AM
ask me anything about math and I'll try to clear it as hard as I can :hat::hat:

FrostxMC =^.^=
12-03-2015, 07:50 AM
It does mean "to the power of"...

How did it get to fractions then?

Gurregris
12-03-2015, 07:57 AM
How did it get to fractions then?

Because X<1 and instead of answering 0.5, for instance, I decided to write 1/2. It looks better.

Ceyx_GrowT
12-03-2015, 08:01 AM
100x = 10
100x = 10
(102)x = 10
2x = 1
x = 1/2

32x = 2
(25)x = 2
5x = 1
x = 1/5

16x = 4
(24)x = 22
4x = 2
x = 2/4
x = 1/2

32x = 8
(25)x = 23
5x = 3
x = 3/5

12-03-2015, 08:02 AM
Is ^ multiplied or duvided.

1. 100^x=10
x=-10
2. 32^x=2
x=-16
3. 16^x=4
x=-4
32^x=8
x=-4

These may be wrong because you really didn't tell us anything about the questions at all. You have to at least have a key to tell us what ^ is. I used it as 'To the power of'.

1. 100^X=10

2. 32^X=2

3. 16^X=4

4. 32^X=8

Ok thx. But can u explain it a bit?

It was by fractions? If it was like that then you don't even need help, do you? It's simple as heck this way. I thought ^ means 'To the power of'
It means raised to the power of.

Just like 2 raised to the power of 1

here's the way!

1. 100^x=10
10^2x=10^1
then 2x=1
so x=1/2

2. 32^x=2
2^5x=2^1
so 5x=1
x=1/5

3. 16^x=4
4^2x=4^1
2x=1
x=1/2

4. 32^x=8
2^5x=2^3
so 5x=3
x = 3/5

Keyword: we should make the basis (or what u called) same so we can make the power (superscript) same too

:hat:
:hat:

How did you get 10^2x=10^1? And thanks.

It does mean "to the power of"...
Raised to the power of.

12-03-2015, 08:13 AM
Ok thx. But can u explain it a bit?

It means raised to the power of.

Just like 2 raised to the power of 1

How did you get 10^2x=10^1? And thanks.

Raised to the power of.

OH I figured it out. Thanks guys, you are the best.