A 20% alcohol solution was mixed with pure alcohol at a ratio of 4:1. What is the percentage of alcohol in the new solution?

Determine os divisores dos números abaixo e diga quais são os primos e quais são compostos: a) 12 b) 13 c) 14

The limit as h approaches 0 of (e^ (2+h) - e^2) / h is?

Which of the following would be the best first step for verifying the identity below? tan^ (2) y (csc^ (2) y - 1) = 1 A. tan^ (2) y (cot^ (2) y) = 1 B. tan^ (2) y (csc^ (2) y - 1) = sin^ (2) y + cos^ (2) y C.

93 times 10 to the sixth power

Which expression is equivalent to - 3 - 3x - 1 + x

In a cylinder, r=7 and surface area s=210pi. Find the volume of the cylinder.

Carleis cutting pieces of string that are excatly 24 3/8 inches long how many pieces can she cut from a ball of string that has 100 feet

Your friend gives you $50 to gamble at a casino and you win 100,000 jow much did you give them

Find the 39th term of the arithmetic sequence that starts with 4 and has a common difference of 6. A. 232 B. 226 C. 238 D. None of these

Jeremy bought six and a half pounds of candy hearts and a card to give to his girlfriend on Valentine's Day he spent a total of $19.50 on both if the card cost a dollar fifty how much did he spend per pound on candy hearts