Math help!!!!! Please explain this question and how to do it!!!?

Question

Does anyone know how to do scientific notation?? Like if i were to put this in standard form 4 x (10 to the -4th power) and put this into scientific notation 0.0089??? please help thanks :)

Answer 1

8.9 x 10^-3

if u really do need help with this simple stuff then ask ur teacher. it is much better since u might get bogus answers if u ask a question on yahoo. by the way, this answer is not bogus, trust me.

Answer 2

Turning scientific notation into standard is easy. Take the 4 you were given, then move the decimal 4 places to the left. That's what the 10^(-4) means. Four decimal places to the left. That gives you 0.0004.
To turn any number into scientific notation, look at the digits you are given and find a number between 1 and 9.99999999......
If you have 0.0089, move the decimal to the right 3 times to get 8.9
Now, to write that as scientific notation, it would be 8.9 x 10^(-3). That's because I had to move the decimal three places.
Hope that makes sense.

Answer 3

There are two ways to express scientific notation. For instance, if we put 0.0089 into scientific notation we could write it as: 89E-4

Or we could write is as 89x10^-4 (89E-4 is easier and it matches the key pad of most calculators)

What we're saying when we write it this way: 89x10^-4 is: 89/10000. The minus sign meaning to put the "10^4" in the denominator.

The advantage of scientific notation is that once we agree on what it means, we can take a number like; 0.000040 (which is significant to manufacturers of ball bearings) and write it as 40E-6 or 40x10^-6

A problem arises however with manufacturers of ball bearings from the fact that they never work in tolerances like 0.1 (which we'd call a tenth). Their tolerances start at numbers like 0.001 (and their lingo calls that a tenth).

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Answer 4

okay, scientific notation is simple if you know the rules.

going from sci to standard:

positive powers, add the number of zeros that the exponent is.
negative powers, move the decimal point backwards the number of places that the negative power is.

so, that first one would be 0.0004

from reg to sci:
move the decimal point over so that it is between 0 and 10, then make it times ten to the (however many decimal places you moved) power. If you move right, it's a negative exponent. If you move left, it's a positive exponent.

So, the second would be 8.9 x 10^(-3)

email me if you don't get it.

Answer 5

IN scientific notation, you want one number between 1 and 9, followed by a decimal (and as many numbers to the right of the decimal as accuracy demand) raised to a power of 10.

To figure out the exponent, write down the number, place a decimal after the first number, in this case the 8 and figure out how many places right ot left you have to move it to make it appear as you have written it. Each decimal place is a factor of 10 (power of ten). In this case, you have to move the decimal 3 places to the left, so it is 8.9 x10^-3.

When you move the decimal to the right, the exponent is positive. For example, 8,900 is expressed as 8.9 x 10^3.

Answer 6

Scientific notation means you represent a number as a product of a number between 1 and 10 and another number that is a power of ten. So 0.00000314 is 3.14 * 10^(-6)

Answer 7

Since you can't use post scripts and subscripts here it is hard to answer but the below link explains it.

0.0089 = 8.9 X (10 to the -3rd power)

Answer 8

8.9*10^-3