Question

Which number is equal to 7(3.5x10^4) written in scientific notation

Answer 1

The answer is:

`2.45* 10^5`

Explanation:

We are asked to expression the value of the given expression:

`7(3.5* 10^4)` in scientific notation.

We know that any number in scientific notation is expressed as:

So the number is written in two parts:

• Just the digits (with the decimal point placed after the first digit), followed by

• × 10 to a power that puts the decimal point where it should be .

Now the value of
`7(3.5* 10^4)` is:

`7(3.5* 10^4)=7* 3.5* 10^4\\\\7(3.5* 10^4)=24.5* 10^4`

in scientific notation the number
`24.5* 10^4` is expressed as:

`2.45* 10^5`

Hence, the scientific notation of
`7(3.5* 10^4)` is:

`2.45* 10^5`

Answer 2

The answer is 2.45 × 10⁵

7(3.5 × 10⁴) = 7 * 3.5 × 10⁴
= 24.5 × 10⁴
= 2.45 × 10 × 10⁴
= 2.45 × 10¹⁺⁴
= 2.45 × 10⁵