Since variables x and y are in direct proportion,
Y = 12.5/25 x 40
Y = 0.5 x 40
Y = 20.
Answer:
The perimeter of the image is 144 inches
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its perimeters is equal to the scale factor
so
The perimeter of the image is equal to the perimeter of the pre-image multiplied by the scale factor

Answer: Choice (3): 

Remember that negative power is the same as reciprocal if the same magnitude power but positive.
for this question you would need to utilize ratios to find the side lengths. For example, set up a ratio between the big triangle with the small triangle to find a side length