(0.006) (0.0007)/2100

answers are:

A. 42

B. 21

C. 2 x 10^-9

D. 2x 10 ^9

which is correct
in order of operations by

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1 Answer

0.006*0.0007/2100

6*7=42

42/21=2

Then add up powers...0.006=6*10^-3

0.0007=7*10^-4

2100=2.1*10^3

-3+-4+-3=-10

but us divided 42 bi 21, so konvert 2100 tu 21*10^2

anser=2*10^-9
by

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