A car travels 45km in an hour. In each of the next two hours, it travels 78km. What is the average speed of the car.

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?