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Answer:
The scale factor used is 0.4
Step-by-step explanation:
Given
Required
Determine the scale factor of RST
The question can be solved using scale factor formula
Scale factor is calculated as thus;
In this case; R' is the new length and R is the old length
Substitute the values of R and R'
Factorize the denominator
<em>Hence, the scale factor used is 0.4</em>