si un cuaderno pesa a gramos y una mochila b gramos cual es el peso total de una mochila con 5 cuadernos en ella?

One positive number is 9 more than twice another. if their product is 95, find the numbers

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

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?