Express in scientific notation. Choose the answer with the proper number of significant figures.

(3 x 104) (4 x 1023) =

Question

Express in scientific notation. Choose the answer with the proper number of significant figures.

(3 x 104) (4 x 1023) =

anonymous · Answer

Multiply the inside of the parenthesis
3x104=312
4x1023=4092
Multiply the two products together.
4092x312=1276704
Take that number and move the decimal point till only 1 integer is left.  The number of times you moved the decimal point will be the power.
1276704.
127670.4
12767.04
1276.704
.......
1.2 x 10^6

anonymous · Answer

Significant factors would be the total number of integers not counting zero unless it's sandwiched between two other integers.  Such as 101