Answer: 90,000
Step-by-step explanation: First let's figure out
.
We know that
means 10 · 10 · 10 · 10.
So let's start with the decimal 1.0.
The exponent of 4 tells us to move the
decimal point 4 places to the right.
Now, we fill in the missing positions with zeroes.
When we do this, we get 10,000.
So now we simply have 9 · 10,000 which is 90,000.
If you would like you could also just do 10 · 10 · 10 · 10 and multiply these numbers to get 10,000. If would recommend using the method I used because it's easier and doesn't require much work.
So 9 ×
written in standard notation is 90,000