If it is known that a+b/a-b=c, find the following

1. 4(a+b)/2(a-b)
2. 3a+3b/2a-2b
3. (a+b)^2/(a-b)^2
4. a-b/a+b
5. 2a-2b/5a+5b

10% of 1,900,000. show me how you got the answer

Drag each number to the correct location on the statements. not all numbers will be used. consider the sequence below. -34, -21, -8, 5, complete the recursively defined function to describe this sequence

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?