# Math Help - scientific notation

1. ## scientific notation

compute the expressions using scientific notation, and write your

(4 x 10^-3) ( 2 x 10^-5) =

(4)(x)(10^(-3))(2)(x)(10^(-5))

(4)(x)((1)/(10^(3)))(2)(x)(10^(-5))

(4)(x)((1)/(1000))(2)(x)(10^(-5))

(4)(x)((1)/(1000))(2)(x)((1)/(10^(5)))

(4)(x)((1)/(1000))(2)(x)((1)/(100000))

(4*x)((1)/(1000))(2)(x)((1)/(100000))

(4x)((1)/(1000))(2)(x)((1)/(100000))

(4x*(1)/(1000))(2)(x)((1)/(100000))

((x)/(250))(2)(x)((1)/(100000))

((x)/(250)*2)(x)((1)/(100000))

((x)/(125))(x)((1)/(100000))

((x)/(125)*x)((1)/(100000))

((x^(2))/(125))((1)/(100000))

((x^(2))/(125)*(1)/(100000))

((x^(2))/(12500000))

(x^(2))/(12500000)

2. Originally Posted by lizard4
compute the expressions using scientific notation, and write your
$(4 \times 10^{-3})(2 \times 10^{-5})$
$= (4 \times 2) \times (10^{-3} \times 10^{-5})$
$= 8 \times 10^{-3 + -5} = 8 \times 10^{-8}$