A roller coaster train with 6 passenger cars and the front decoration has a mass of 3,500 kg. When the train has
the front decoration and only 4 passenger cars, it has a mass of 2,400 kg

Each passenger car: 550 kg

Front decoration: 200 kg

Step-by-step explanation:

Mass of passenger car: p

Mass of front decoration: d

6p + d = 3500 (1)

4p + d = 2400 (2)

(1) - (2)

2p = 1100

p = 550 kg

4(550) + d = 2400

d = 2400 - 2200

d = 200 kg

answer: a clock

step-by-step explanation:

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse