Question

I need help A.S.A.P.

Samuel entered the following key strokes on his calculator.

5 EE (-) 9 / 2 EE 4

What did Samuel’s calculator display?

A.
2.5E – 13

B.
2.5E – 4

C.
2.5E5

D.
2.5E14


5 EE (-) 9 / 2 EE 4

Answer 1

A. 2.5E - 13

I just took the test on T4L 2023 and got it right. Hope this helps :)

Answer 2

Option A -
`(5E(-9))/(2E(4))=2.5E(-13)`

Explanation:

Given : Samuel entered the following key strokes on his calculator
`(5E(-9))/(2E(4))`

To find : What did Samuel’s calculator display?

Solution :

Expression,

`(5E(-9))/(2E(4))`

We know that, E means 10 to the power

So, Converting scientific notation into standard form

`=(5* 10^(-9))/(2* 10^(4))`

Solve the division,

`=(5)/(2)* 10^(-9-4)`

`=2.5* 10^(-13)`

Converting standard into scientific,

`=2.5E(-13)`

Therefore,
`(5E(-9))/(2E(4))=2.5E(-13)`

So, Option A is correct.