Answer:
11
Step-by-step explanation:
| | takes the absolute value of a number so it wouldn't be negative
Answer:
-1
Step-by-step explanation:
Subtract 9 from both sides of the equation
Assuming that the figures given are square such that the scale factor between them is equal to 28/8 which can be further simplified into 7/2. The ratio of the perimeter is also equal to this value, 7/2. However, the ratio of the areas is equal to the square of this value giving us an answer of 49/4.