8.4 ÷ 2.1 is equivalent to 84 ÷ 21. The dividend and divisor were both multiplied by

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.

2x + 3y = 17 5x + 6y = 32 usibg method if elimination