Question

Jordan types 0.0000000012 into his calculator then presses Enter. Which expression below do you expect the scientific calculator to display?

1.2E10
1.2E-9
12E9
12E-9

Answer 1

1.2E-9 , is the correct answer

Answer 2

`1.2E^(-9)`

Explanation:

Jordan types 0.0000000012 into his calculator then presses Enter.

This can be shown as :

`(1.2)/(1000000000)`

Now, if this has to be written without fraction, the decimal will move 9 places to the left making it 0.0000000012.

If it has to be written in E form, then it becomes
`1.2E^(-9)`