Hi if someone can answer the top one I’ll mark u brainliest thanks
2 answers:
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Given:
The point is B(2,5) and its image is B'(1,2.5).
To find:
The scale factor.
Solution:
If a figure is dilated by the scale factor k and (0,0) is the center of then the scale factor is defined as
x-coordinate of point B' is 1 and the x-coordinate of point B is 2. So, the scale factor is
Therefore, the scale factor is and the correct option is D.
Answer:
Step-by-step explanation:
I assume you need help with the first picture:
Let
Then
Clearly you can see that the sum of 2 rational numbers gives a rational number.