Which expression represents the largest number?
And could you explain it to me? I'm having a hard time understand Exponents and Exponential Functions..

40.1 x 10–6
4.1 x 10–7
0.411 x 10–7
0.04001 x 10–5

Question

Which expression represents the largest number? 
And could you explain it to me? I'm having a hard time understand Exponents and Exponential Functions..

    40.1 x 10–6
    4.1 x 10–7
    0.411 x 10–7
    0.04001 x 10–5

anonymous · Answer

4.1 x 10-7

slaaibak · Answer

First try writing everything in scientific notation.

Like y.x * 10^z

anonymous · Answer

Well since the largest number is the one with the largest exponent
since -5 > either -6 or -7, I kinda thought it would be A.

anonymous · Answer

B is the answer.

slaaibak · Answer

no, it's not B.

anonymous · Answer

The problem is that not all numbers are aligned correctly.

slaaibak · Answer

Hence why I said, write everything in scientific notation

anonymous · Answer

A is correct in this case, but generally you want to align the numbers correctly, then you look at exponents.

slaaibak · Answer

or rather, standard scientific notation

eg: a * 10^b

where

|a|<10

anonymous · Answer

(A)40100000
(B)41000000
pls tell me again that the answer is A bro

anonymous · Answer

Answer is B not A period.

slaaibak · Answer

Put on your glasses and see the - in the exponent, bro

anonymous · Answer

If was negative esponents then should look like 10^-7

mathstudent55 · Answer

40.1 x 10^-6       = 4.01  x 10^-5
4.1 x 10^-7         = 4.1    x 10^-7
0.411 x 10^-7     = 4.11  x 10^-8
0.04001 x 10^-5 = 4.001 x 10^-7

slaaibak · Answer

@argos 

some people use the notation without the ^

are you telling me you thought a - sign was a ^ sign?  How on earth can you think that?

anonymous · Answer

40.1 x 10^-6 is 4.01 x 10^-5
4.1 x 10^-7
0.411 x 10^-7 is 4.11 x 10^-8
0.04001 x 10^-5 is 4.001 x 10^-7   So are these the notations? So would that make the largest number the first one?

slaaibak · Answer

yes

anonymous · Answer

fram my country double "--" is use sometime to represent a ^

mathstudent55 · Answer

Look at what I wrote above. Change all numbers to standard scientific notation, 
a x 10^b, where 0<=a<10, multiplied by 10 to power b.
Then the lower the exponent is, the smaller the number is. 10^-8 is less than 10^-7 which is lees that 10^-5. The smallest number is C, and the largest number is A.

mathstudent55 · Answer

@raeofsunshine Yes, the first number is largest

slaaibak · Answer

@mathstudent55 |a| < 10    :)

anonymous · Answer

Thank you!