"Unsolvable" Equations( Week 34 Practice) 1. If 9 × = 6, what is the value of 240 × ? 2. If x + y + z = -4 and 5x + 2y + 5z = -35, what is the value of y? 3. Suppose 9x + 12y = 1 and 12x + 9y = 104. What is (x + y) = ? 4. If 6(4x − 2)2 + 8(2y + 10)2 = 0, what is the value of 4x − 2y? 5. If = , what is the value of ? |