The capacity of an automobile cooling system is 16 quarts it is half full of 15 percent anti-freeze solution the owner is adding 2 gallons of 90 percent solution when he’s finished what will the solutions percentage value be

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

What expression is equivalent to 1/2(2+3x-6)

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.