After six months an astronomer notices that star A moves a greater distance star

Arecycling company gives you 5 cents for every plastic bottle and 10 cents for every glass bottle. from a certain individual the recycling company received 59 bottles and paid $4.55. how many glass bottles did the individuals recycle?

Does anyone have some ideas for an herbalism or culinary project? i need to start my graduation project so i'm prepping for it

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?