Four.
4.28x10^-3 ------> 4.3x10^-3
No, it actually has seven significant figures. Basic rule: (1)When number has decimal point---count from left to right counting all numbers after the first non-zero number ex.-->.009367 has 4 sig figs ex.-->9.367 has 4 sig figs ex.-->9.367000 has 7 sig figs (2)When number doesn't have a decimal point---count right to left counting all numbers after the first non-zero number ex.-->12 has 2 sig figs ex.-->120 has 2 sig figs ex.-->1207800 has 5 sig figs
It is an ambiguous question. The answer is 2, 3, 4 or 5. If counting in thousands: 43000, 44000, 45000 then 2 at the other extreme, if counting in units: 44998, 44999, 45000 then 5.
12,598,430 inches(Rounded to 7 sig figs, using 1 mi = 1,609.344 m.)
there are 3 sig figs. 4, 0, and 5 are the sig figs
5 sig figs
There are four sig figs in 1.032
There are four sig figs in 2.905.
There are 4 sig figs in 20.13
There are four sig figs in 60.55.
There are eight sig figs in 57.115102.
All five of them are sig figs
6.002 has four sig figs.
There are two sig figs in 290.
There are two sig figs in 3700000.
There are five sig figs in 4.1275.