Question

hi! can you please tell me the steps on how to get the circled answer? i can’t figure it out ive tried every way i can think of

Answer 1

Starting with

`z=(2005-2005)/((6.41)/(√(30)))`

Notice that

`√(30)=5.48`

Therefore,

`\Rightarrow z=(2005-2005)/((6.41)/(5.48))`

The answer should be

`\Rightarrow z=(0)/((6.41)/(5.48))=0`

However, the followed steps imply that

`\begin{gathered} 2005-2005=(2005)/(2005) \\ \Rightarrow0=1!!!! \end{gathered}`

Furthermore,

`((2005)/(2005))/((6.41)/(5.48))=(1)/((6.41)/(5.48))=(5.48)/(6.41)=0.854...`

Therefore, the calculations shown in the picture are wrong two times. It is not possible to reach a result of 1.17 given the first or second step.

The way to obtain 1.17 is

`1.17=(6.41)/(5.48)=(1)/((5.48)/(6.41))=((2005)/(2005))/((5.48)/(6.41))`