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How much is one thirteenth to one twelfth Such as the title
It's 12 out of 13
Which is bigger, 9 out of 17 or 28 out of 51?
28 out of 51
Nine out of 17 equals 27 out of 51
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- 1. Simple mathematical operation: 12 / 17 × 2 / 3 + 2 / 3 △ 17 / 5, 33 / 37 × 36 33 / 37 × 38 13.5×27+13.5×72+13.5 1.5 × 7.4 + 0.6 × 150% + 2 △ two thirds 5.3 × quarter + 2.7 × 25% 0.67×10.1－6.7 23×21.6－2.8×16 5.6×1.7＋0.56×83 No one can write!
- 2. 14 out of 15 times 7 out of 17 times 5 out of 28 times 17
- 3. Ingenious calculation of 100-99.89 + 9.09-0.11 =
- 4. Simple calculation of [11 + 10 / 1] * 11
- 5. In order to calculate 7 / 11 × 10 + 7 / 11, what law can be used to simplify the calculation
- 6. How easy is (768-68 × 11) △ 10?
- 7. Simple operation of 12.8 × 0.75 + 2.5 × 1.28
- 8. Simple calculation of 4 × 0.8 × 2.5 × 12.5
- 9. 6 / 11 / 3 () 6 / 17 / 16 × 4 / 5 () 16 / 3 / 17 / 6 / 39 / 4 / 4 / 4 / 1 () 9 / 4 × 4 / 1 () fill in ">" < "=" Adopt the fastest answer, but also accurate
- 10. What's one and four times two and five times two
- 11. Simple calculation of 17 / 50 × 9 × 20 / 51
- 12. Simple calculation of 49 times 51 plus 451 times 26 plus 25 times 451
- 13. For any point (x, y) on the line L, the point (4x + 2Y, x + 3Y) is still on the line
- 14. 1. If the solution of the equations {x + y = 3k, X-Y = 7K} about X, y satisfies the equation 2x + 3Y = 6, find the value of K 2, for X, y 1. If the solution of the equations {x + y = 3k, X-Y = 7K} about X, y satisfies the equation 2x + 3Y = 6, find the value of K 2. For X and y, we define a new operation "*": X * y = ax + by, where a and B are constants. On the right side of the equation are the usual addition and subtraction and multiplication operations. We know that 3 * 5 = 15, 4 * 7 = 28, and find 1 * 1 3. If the solution of the equations {3x + 2Y = P + 1,4x + 3Y = P-1} x ＞ y, the value range of P is obtained 4. It is known that the solution of the system of linear equations {2x + y = 6m, 3x-2y = 2m} with respect to X and Y satisfies the condition that one-third of x-one-fifth of y = 4, and the value of M is obtained
- 15. It is known that Tan α and Tan β are two solutions of the equation 2x square + 4x + 1 = 0
- 16. It is known that the two roots of the quadratic equation (6-k) (9-k) X2 - (117-15k) x + 54 = 0 with respect to X are integers, and the values of all real numbers K satisfying the conditions are obtained
- 17. It is known that the two roots of the bivariate linear equation of X: (6-k) (9-k) x ^ 2 - (117-15k) x + 54 = 0 are integers, and all k values that meet the conditions are obtained
- 18. Of the following vectors, parallel to the vector a = (2, − 3) is () A. （-4，6）B. （4，6）C. （-3，2）D. （3，2）
- 19. Vector algebra proves that "given a × B = C × D, a × C = B × D, prove that a - D and B - C are collinear."
- 20. If | a | = 1, | B | = 2, C = a + B, and C ⊥ a, then the angle between a and B is Hope there are detailed steps