Which set of line segments can be used to construct a triangle? A) 6cm, 3cm, and 2cm
B) 7cm, 4cm, and 1cm
C) 8cm, 3cm, and 6cm
D) 9cm, 2cm, and 6cm

Acar with a mass of 600 kg is traveling at a velocity of 10m/s. how much kinetic energy does it have?

The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.