"Unsolvable" Equations( Week 34 Evaluation) 1. If 7 × = 8, what is the value of 320 × ? 2. If x + y + z = 2 and 5x + 3y + 5z = 0, what is the value of y? 3. Suppose 6x + 3y = 3 and 3x + 6y = 33. What is (x + y) = ? 4. If 12x + 5 = 6y + 17, then 4x − 2y = 5. If P + 2Q = R and = 1, what is P + 2Q + 3R =? 6. If 9(5x − 6)2 + 6(2y + 3)2 = 0, what is the value of 5x − 2y? 7. If = , what is the value of ? 8. If x and y are non-zero numbers and 5x2y = 4xy2, then = 9. If (3xy + 4)(3yx − 4) = -7, what is the value of x2y2? 10. If 2(5x − 5) = 10(x − 2m), what is the value of 4m? |