"Unsolvable" Equations( Week 34 Evaluation) 1. If 6 × = 9, what is the value of 225 × ? 2. If x + y + z = 8 and 5x + 8y + 5z = 46, what is the value of y? 3. Suppose 5x + 6y = 7 and 6x + 5y = 37. What is (x + y) = ? 4. If 10x + 3 = 4y + 7, then 5x − 2y = 5. If P + 2Q = R and = 3, what is P + 2Q + 3R =? 6. If 8(4x − 5)2 + 5(2y + 1)2 = 0, what is the value of 4x − 2y? 7. If = , what is the value of ? 8. If x and y are non-zero numbers and 8x2y = 9xy2, then = 9. If (3xy + 5)(3yx − 5) = -7, what is the value of x2y2? 10. If 2(3x − 3) = 6(x − 5m), what is the value of 5m? |