Karla bought 2 pounds of broccoli, 1 3/4 of green beans, and 10 ounces of kale. how much do karla's vegetables weigh in all? write two different ways.

Can someone show me step by step how to do this?

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.