0.0393
0.0755
26.0
I am not sure I understand the question but 31% of 78 is: 0,31 * 78 = 24 (24,18 rounded to two significant figures)
24
23.81558 to two significant figures is 24.
0.0393
0.0755
24000
24 has 2 sig figs.
Answer: 2.4 mi. = 3,862.425 m
26.0
If the measurements are inches than the answer is 130 gallons (126.54 with greater accuracy than the 2 significant figures given in the dimensions)
There are 3.89 x 10^24 atoms in 6.45 mol of silicon. This is calculated by multiplying Avogadro's number (6.022 x 10^23) by the number of moles of silicon.
The figures for how many female convicts were sent to Australia vary from between 24 700 and 24 960.
252 / 24 = 10.5 days. There are 365 days in one regular year, therefore, rounded to two significant figures, this is equal to 105/3650 = 0.029 years.
1.66 x 10-24 equals 0.00000000000000000000000166 those zeroes are not significant figures The exponent moves the numbers to the left of the decimal point since it is negative