"Unsolvable" Equations( Week 34 Practice) 1. If 7 × = 5, what is the value of 250 × ? 2. If x + y + z = -6 and 5x + 3y + 5z = -34, what is the value of y? 3. Suppose 8x + 7y = 9 and 7x + 8y = 66. What is (x + y) = ? 4. If 2(3x − 7)2 + 6(2y + 6)2 = 0, what is the value of 3x − 2y? 5. If = , what is the value of ? |