The tallest building in the world, the Burj Khalifa in Dubai, is 828 meters tall. A model of the building is made using the ratio 1:5,000. How high is the model in centimeters? A 1,656 cm B 165.6 cm C 16.56 cm D 1.656 cm​

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible