PLSSS HELP ME III WILLL GIVVVEEE BRAINLIEST

They are not equvalent ratios.

Step-by-step explanation:

You cannot simplify 40/49 anymore, and they are both different from the other in their decimal forms, therefore 5/6 and 40/49 aren’t equivalent.

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