1) Yuri is twice as old as Zack. Four years from now, the sum of their ages will be 23. How old is Yuri?

Which choice represents the sample space ,s for this event

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]