How much is 6 out of 7 minus 7 out of 14 to 1 out of 14

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• 1. 16 minus 1 equals 15, 25 minus 4 equals 21, and N is the rule
• 2. 6X plus 37 is 7 times (x minus 14)?
• 3. Calculate 13 ° 19'42 '+ 6 ° 10'28' How to make a formula?
• 4. The product of 4 and 5.8 minus 8 x equals 7.2, find X
• 5. -What is 9 out of 16 * - 25 * - 8 out of 27?
• 6. 36 and 1 / 3 degrees into degrees, minutes and seconds OK, give me a score There's another one 30 ° 30 'into degrees of degrees I've got the second wrong number. It should be 32 ° 30 '
• 7. Given the quadratic function f (x) = ax ＾ 2 + BX + C, a ＾ B ＾ C and f (1) = O, first, prove that the image of F (x) and X axis have two intersections; second, prove that the function f (x) has two intersections Given the quadratic function f (x) = ax ＾ 2 + BX + C, a ＾ B ＾ C and f (1) = O, 1. Prove that the image of F (x) has two intersections with X axis, 2. Prove that a zero point of F (x) is less than - 1 / 2, 3. If f (m) = - A, try to judge the sign of F (M + 3) and prove your conclusion
• 8. How to solve the equation that 121 divided by x equals 11? 74.5-x = 36.6 this equation can be solved by the way
• 9. Given that f (x) is an even function on R and a decreasing function on (- ∞, 0), then the solution set of the inequality f (x) ≤ f (3) is______ ．
• 10. Find out the numbers represented by O, △ and Kou. 1: Kou + o = 43, Kou + △ 48, O + △ 55. Kou = (), o = (), △ = ()
• 11. 6 minus five by twenty-eight, minus seven by twenty-eight, minus twenty-three by twenty-eight
• 12. If a + B equals 23, what is (a + 5) + (b minus 4)?
• 13. How much is 0.8888 times 0.7 plus 0.2222 times 1.2
• 14. How much is 99 times 76 plus 8888?
• 15. 8888 times 111 times 693?
• 16. How much is 18888 + 8888 times 9999?
• 17. 9 times of a number, plus 10 equals 10 times of it minus 9, find the number
• 18. Two out of five minus one out of eight equals one out of four
• 19. Two out of five minus eight is one out of four
• 20. Under what circumstances will four minus three equal five?