Question

Multiply(7 x 10^3)(4 x 10^5)Type your answer in scientific notation.

Answer 1

`2.8*10^9`

Step-by-step explanation:

To evaluate the expression:

`\mleft(7*10^3\mright)\mleft(4*10^5\mright)`

First, we remove the bracket as shown below:

`=7*10^3*4*10^5`

Next, we rearrange to bring the powers of 10 together:

`\begin{gathered} =7*4*10^3*10^5 \\ =28*10^(3+5) \\ =28*10^8 \\ =2.8*10^9 \end{gathered}`