"Unsolvable" Equations( Week 34 Evaluation) 1. If 5 × = 7, what is the value of 210 × ? 2. If x + y + z = 4 and 3x + 2y + 3z = 11, what is the value of y? 3. Suppose 8x + 5y = 3 and 5x + 8y = 36. What is (x + y) = ? 4. If 6x + 4 = 8y + 8, then 3x − 4y = 5. If P + 2Q = R and = 1, what is P + 2Q + 3R =? 6. If 7(3x − 5)2 + 6(4y + 7)2 = 0, what is the value of 3x − 4y? 7. If = , what is the value of ? 8. If x and y are non-zero numbers and 5x2y = 4xy2, then = 9. If (4xy + 5)(4yx − 5) = 39, what is the value of x2y2? 10. If 2(6x − 18) = 12(x − 2m), what is the value of 2m? |