Jim was thinking of a number. Jim halves it and gets an answer of 3.4. What was the original number?

6.8

Step-by-step explanation:

To tackle these types of questions, you essentially have to 'undo' or ' reverse' the calculation/s that is being done in the question.

In the question, the calculation that is being done is 'halfing' or 'dividing by 2'.

So to find the original number you have to do the opposite - double or 'multiply by 2'

Therefore

3.4 x 2 = 6.8

hope this helps :)

my acc plz

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have