Triangle DEF has coordinates D(3, 4), E(4, 1), and F(1, -2). If the triangle is dilated by a scale factor of 2, what are the coordinates of D'?

Ill mark the brainliest if you me with the these three questions 7,8,9

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?