Question

Which solution contains the correct number of significant digits for the product
2.80 mm · 0.1 mm.
a.

0.28 mm879-04-05-00-00-pre_files/i0240000.jpg

c.

0.30 mm879-04-05-00-00-pre_files/i0240001.jpg
b.

0.280 mm879-04-05-00-00-pre_files/i0240002.jpg

d.

0.3 mm

Answer 1

of your factors (the things you are multiplying), which has the least significant digits and what is that number of significant digits of that number?

Answer 2

um 2 or 3?

Answer 3

nope

Answer 4

?

Answer 5

0.1 has 1 significant digit. it could be written as
\[1 \times 10^{-1}\]

in multiplication and division, the number of significant digits in an answer should equal the least number of significant digits in any one of the numbers being multiplied or divided.

Answer 6

oh, and the units should be\[mm^2\]

Answer 7

so what the answer?

Answer 8

i suck at math

Answer 9

ill just guess like i always do

Answer 10

http://www.physics.uoguelph.ca/tutorials/sig_fig/SIG_dig.htm

http://www.purplemath.com/modules/rounding2.htm

I'd say it's your attitude that sucks... but you are free to change that at any time you please.

Math is about the process, not the answer.