David has 20 coins he gave some coins to Peter David had eight Coins Left how many coins did David give To Peter?

Hassan writes an algebraic expression with four terms. The x-term has a coefficient of 2, and the z-term has a coefficient of - 1. The expression has a constant term less than zero.

Two times an unknown integer, multiplied by the unknown integer minus two times a different unknown integer, equals 50."

Suppose that in a large company, 30% of the computers are infected by adware. if 6 computers are randomly selected and tested, what is the probability that 2 of the computers are infected by adware?

The sides of a triangular lot are represented by x, 3x, and 3x + 2. Find each side if the perimeter is 632 feet.

If John read only 10 pages of a book in an hour, how long would it take to read all the pages of the book if it has 487 pages?

What is the domain of f (x) = cos (x) ?

Mike and Kim invest $14,000 in equipment to print yearbooks for schools. Each yearbook costs $7 to print and sells for $35. How many yearbooks must they sell before their business breaks even?

What is the solution to the system of equations? Use the substitution method. j + k = 3 j - k = 7 A. The solution is (8, 1) B. The solution is (5, - 2) C. There is no solution. D. There are an infinite number of solutions.

30% of what number is 10.2

Long division 19 divide 23.94