sat suite question viewer
The solution to the given system of equations is . What is the value of ?
Explanation
Choice C is correct. It's given by the first equation in the system that . Substituting for in the second equation in the system yields . Multiplying the left-hand side of this equation by and the right-hand side by yields . Adding to both sides of this equation yields . Multiplying both sides of this equation by yields .
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect and may result from conceptual or calculation errors.