Find the distance CD rounded to the nearest tenth C = (7,-4) D = (-8,-5)

15.0 (to the nearest tenth)

calculate the distance (d) using the distance formula

d = √ (x₂ - x₁) ² + (y₂ - y₁) ²

with (x₁, y₁) = (7, - 4) and (x₂, y₂) = ( - 8, - 5)

d = √ (-8 - 7) ² + ( - 5 + 4) ² = √ (225 + 1) = √226 ≈ 15.0