-0.00357202. How would i round that number to four significant figures then write it in exponential notation.?

Answer 1

-3.572 x 10^-3

Answer 2

Remember in significant figures, leading zeroes do not count. So you use only the 4 first numbers after the zeroes. The number must be rounded, depending on the following number 0-4 leave as is, 5-9 round up. So we end up with -0.003572. Now exponential notation, I guess you are referring to scientific notation?
Scientific notation is always a number between 1 and 10 (or -1 and -10, depending on the sign), multiplied by the appropriate power of 10. In this case the number becomes:
-3.572x10^(-3) (^ is the exponential notation and -3 is the exponent). This is the same as saying -3.572 divided by 1000, which gives the number we started with (-0.003572)
Hope this has cleared a bit the significant figures and scientific notation principles.

Answer 3

.003572 to 4 sig digits
3.572 x 10^-3

Start with the left-most non-zero digit. E.g. the '1' in 1,000, or the '2' in 0.02.
Keep n digits. Replace the rest with zeros.
Round up by one if appropriate. For example, if rounding 0.039 to 1 significant figure, the result would be 0.04. There are several different rules for handling borderline cases - see rounding for more details.
Zeros appearing between nonzero digits are significant, for example:

60.8 has three significant figures
39008 has five significant figures
Zeros appearing in front of nonzero digits are not significant, for example:

0.093827 has five significant figures
0.0008 has one significant figure
Zeros at the end of a number and to the right of a decimal are significant, for example:

35.00 has four significant figures
8,000.000000 has ten significant figures
Zeros at the end of a number without a decimal point may or may not be significant, and are therefore ambiguous, for example:

1,000 could have between one and four significant figures.
This ambiguity could be resolved by placing a decimal after the number, e.g. writing "1,000." to indicate specifically that four significant figures are meant, but this is a non-standard usage.

To specify unambiguously how many significant figures are implied, scientific notation can be employed:

1×103 or 1e3 has one significant figure, while
1.000×103 has four.
Retrieved from "http://en.wikipedia.org/wiki/Significant_figures"

Answer 4

A-80 4,seventy 9 B-38,fifty 4 C-256,8 D4,936 so which you opt for 4 significant parent you may seem to the 5th quantity so if the quantity is way less then 5 you basically drop it yet whilst that's larger than 5 you will rounded to the quantity that comes in the previous it

Answer 5

-0.003572 = 4 sig figs

-3.572 x 10^-3 is in exponential notation using the four sig figs.

There you go!!!

Answer 6

i think that would be 3.57x10, (and then in tiny numbers at the top of the ten, -3)