An airplane travels 1560 miles in 3 hours flying with the wind. The return trip takes 4 hours. Find the rate of the plane in still air and the rate of the wind.

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.

Asix-sided number cube is rolled twice. what is the probability that the first roll is an even numbe and the second roll is a number greater than 4?