In a coin jar, there are 45 nickels. The number of pennies and nickels together equal the number of dimes. There are 2 quarters for every 3 nickels and 2 dimes for every quarter. Complete the table: Pennies Nickels Dimes Quarters 45

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

I'm marking the brainliest and it's 15 points

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet