Dose anyone knw the answer?
2007-01-28 06:34:40 · 10 answers · asked by sara s 2 in Science & Mathematics ➔ Mathematics
1.20 x 10^5
2007-01-28 06:37:09 · answer #1 · answered by silver.rain 2 · 0⤊ 1⤋
In writing, of course, you'd just write 1.20 x 10^5.
However, if your question is how to ENTER THAT PARTICULAR number to 3 significant figures on a calculator, all that you'd need to enter would be:
1.2 followed by whatever buttons you use to give you "x 10^5".
The latter buttons are probably "E", then "5", where "E" stands for "EXPONENT" (not "e", the base of natural logarithms!). It is understood that the exponent is to be treated as a power of 10 (i.e. it will give you "10 raised to the value of the following exponent").
But back to your question on significance:
You DON'T have to enter ANY further ending digits into your calculator once you reach the first "0" for which it or any succeeding string of zeros fill(s) out the complete set of significant digits. Calculators automatically provide the succeeding strings of 000's with as much significance as they can hold. That COULD be up to 8, 10, 12, 15, ... possible significant digits depending on the accuracy of your given data and the sophistication of your calculator. But always remember --- the number of significant digits in your final results will be no better than those in your inputs. And sometimes (depending on the complexity and/or pathological quirks of your calculation) it could be less!
Live long and prosper.
2007-01-28 14:39:40 · answer #2 · answered by Dr Spock 6 · 0⤊ 1⤋
1.200*10^5 or 1.200E5 both are correct the first is how students are generally taught, but calculators use the second. it is to the 5th power or E5 because the decimal was moved 5 places. you move it 5 places in this problem because you are making the equation so that there is only one digit to the left of the decimal (in other words it is greater than or equal to 1 and less than 10)
2007-01-28 14:50:36 · answer #3 · answered by aka_me 2 · 0⤊ 0⤋
1.2x10^5
u just move the decimal point to the left untill the number is more than 1 and less then 10
2007-01-28 14:47:27 · answer #4 · answered by Josie 1 · 0⤊ 0⤋
1.20 x 10^5
2007-01-28 14:38:12 · answer #5 · answered by turcott2 2 · 0⤊ 1⤋
1.20*10^5
Hope this helps
:)
2007-01-28 14:55:52 · answer #6 · answered by Mullen 4 · 0⤊ 0⤋
1.20*10^5
2007-01-28 14:37:50 · answer #7 · answered by Paul B 3 · 0⤊ 1⤋
120^10to the third power
2007-01-28 14:38:23 · answer #8 · answered by Anonymous · 0⤊ 1⤋
1.2*10^5
now where's my two points?
2007-01-28 14:43:04 · answer #9 · answered by TED 2 · 0⤊ 1⤋
1.200E6
2007-01-28 14:37:47 · answer #10 · answered by martin h 6 · 0⤊ 0⤋