Final answer:
To find the distance between two points in a coordinate system, we can use the distance formula. The distance between (15.2, 8.6) and (9, -10.11) is approximately 19.73 units.
Step-by-step explanation:
To find the distance between two points in a coordinate system, we can use the distance formula. The distance formula is √((x2 - x1)^2 + (y2 - y1)^2), where (x1, y1) and (x2, y2) are the coordinates of the two points. Using this formula, we can find the distance between the points (15.2, 8.6) and (9, -10.11) as follows:
Distance = √((9 - 15.2)^2 + (-10.11 - 8.6)^2)
Distance = √((-6.2)^2 + (-18.71)^2)
Distance = √(38.44 + 350.5441)
Distance = √(388.9841)
Distance ≈ 19.73 units
Therefore, the correct answer is option b) 18 units.