Question

Simplify: (5.4 x 103)(7.2 x 10-6)
3.888 x 1017
3.888 x 10-3
3.888 x 10-2
3.888 x 1010

Answer 1

\[(5.4 \times 10^3)(7.2 \times 10^{-6})\]\[5.4 \times 7.2 \times 10^{-6} \times 10^3\]

Answer 2

First
can you do 5.4 x 7.2 ?

Answer 3

38.88

Answer 4

Yes ,That's right

Now what is \[10^3\times 10^{-6} = ?\]

Answer 5

\[(5.4*10^3)(7.2*10^{-6})\]
\[54/10 * 10^3)(72/10*/10^6)\]
\[5400*7200000\]
\[38880000000\]
convert it in scientific form , well diya is going on a good way i didn't read the question properly

Answer 6

9994

Answer 7

ok
you have to remember this \[\Large x^m \times x^n= x^{m+n}\]

I'll give you an example

\[10^2 + 10^4 = 10^{2+4} =10^6\]

so what is \[\large 10^3 \times 10^{-6} = ?\]

Answer 8

IM SORRY ITS -3

Answer 9

Ok so what is \[\Large 10^{-3} \times 10 ^ {-6}= ?\]

Answer 10

3.888 X10-3

Answer 11

\[ \large(5.4 \times 10^{3})( 7.2 \times 10^{-6}) \]
is this your question

or

\[ \large (5.4 \times 10^{-3})( 7.2 \times 10^{-6}) \]

Answer 12

THE FIRST ONE

Answer 13

Ok
so we got
\[\large 38.88 \times 10^{3} \times 10^{-6}\]\[\large 10^{3} \times 10^{-6} = 10^{3+(-6)}\]

so
\[38.88 \times 10^{-3}\]

Answer 14

So now we need this in the form 3.888 x

Answer 15

so inorder to shift the decimal to the left side we multiply by \(10^{-1}\) or just divide by 10