Each marble bag sold by linda's marble company contains 4 orange marbles for every 5 blue marbles. if a bag has 45 blue marbles, how many orange marbles does it contain?

What are potential hypotheses (explanations) regarding why there are ecological equivalents between many metatherians and eutherians? discuss your hypothesis in terms of the processes that could lead to the current ecologies and distributions of metatherians and eutherians.

Will give brainliest what is the value of x? enter your answer in the box.

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?