Junior high school mathematics application problem formula, to complete, important

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• 1. 6 & # 178; + X & # 178; = (18-x) &# 178; solve the equation Write clearly step by step
• 2. Calculate 180 ° - (45 ° 15 '+ 52 ° 57') (example 3 on page 156 of imitation textbook)
• 3. If (2x2-x-1) 3 = a0x6 + a1x5 + a2x4 + a3x3 + a4x2 + a5x + A6, then a1 + a3 + A5=______ ．
• 4. X minus 7 and 4 / 5 is 4 and 2 / 7
• 5. Simple polynomial division by factorization (16x-1) divided by (4x ＾ + 1) divided by (2x-1)
• 6. Divide the numbers of 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 into five groups. The sum of three numbers in each group is equal to 24 What's the rule of doing this kind of problem?
• 7. Find the volume of cylinder, cylinder, bottom diameter 0.6m, top diameter 0.7m, height 0.7m, what is the volume?
• 8. The divisor is the divisor divided by the quotient. When the quotient is the remainder, what is the divisor equal to?
• 9. A drawer of Mr. Wang's desk is 50cm long, 40cm wide and 12cm high. How many square decimeters of wood do you need to make this drawer?
• 10. -Simple operation of 1-2-3 + 4 + 5 + 6-7-8-9 + 10 + 11 + 12 -. - 31-32-33 + 34 + 35 + 36 Quick, right away, good points! What seas, Straits and canals does a warship go through from the east coast of the United States to the Persian Gulf
• 11. It is known that a, B, C and D are rational numbers, where the positions of a, B, C and D on the number axis are shown in the figure, and the value of | A-B | - 2 | B-C | + | C + D | a. The distance of b.c.d is uncertain, which is probably the case. The number axis can't draw b d 0 C a Please hurry up!! Thank you!
• 12. How many square feet is one square meter
• 13. A quadratic polynomial about X, when x = 1, the value of the polynomial is - 1. What is the sum of the coefficients of this polynomial?
• 14. 3,3,8,8 addition, subtraction, multiplication and division equals 24 The more the better, 3Q
• 15. The value range of function y = (4-cos ^ x-3sinx) / (2-sinx)
• 16. A = four fifths × B = C × seventy-five percent = e ／ two thirds = D ／ three fifths. Arrange a, B, C, D, e from small to large
• 17. The calculation of rational number in junior high school 1）23-17-｛-7｝+｛-16｝（2）（+24）+（-14）+（-16）+（+8） （3）2/3-1/8-（-1/3）+（-3/8）（4）（41）+（-23）+（-34）+0 (5)1/2+（-2/3）-（-4/5）-（-1/2）
• 18. Archimedes principle problem g row = f float = m row g right, so m row and so on are not equal to the mass of the object put in? There is a question: put a 10 cm long solid cube gently into a beaker full of water (here I ask the first question, is it completely submerged?). When the wood block is still, 600 g of water will overflow from the beaker (the second question is as our teacher said: F floating = g row = m row, g = ρ liquid (here the liquid is water) GV row, then = 1 × 10 & # 179; kg / M & # 179; 8 N / kg × 1000 × 10 ^ - 6 is equal to 9.8 N, but it can be calculated with m row g = 0.6 kg × 9.8 N / kg = 5.88 n. who can tell me how this is all the same? The density of water is the same. The volume of water discharged is the same. The first one is 1.0 × 10 & # 179; × 1000 × 10 ^ - 6 = 1 kg. The second one is 600 g = 0.6 n. why is it different!)
• 19. On the physical problems of Archimedes principle There is a metal ball hanging at the lower end of the spring dynamometer. The indication of the spring dynamometer is 10N. If half of the metal ball is immersed in water, the indication of the spring dynamometer is 8N. If the metal ball is completely immersed in water, what is the indication of the spring dynamometer?
• 20. Archimedes' principle can be expressed by the formula F floating = P liquid GV. What is v discharge liquid? Detailed point! A question a question answer!