![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
2/1+6/5—12/7+20/9—30/11+42/13—56/15
(1+5+7+9+11+13+15)/(2+6+12+20+30+42+56)=51/168
How to do the last question on the 27th page of PHS!
You type out the title
The area of polygon of PHS in the fifth grade
In the last five, you'd better try to answer question 5. The two heights of a parallelogram are 8dm and 6dm, and the bottom is 15dm. Find the length of the other side. Question 6. The bottom of a parallelogram is 240 meters, and the height is 125 meters. In this field, you can harvest 7380 kg of rape. How many kg of rape can you harvest per square meter?
The area of the parallelogram is 15 × 8 = 120 (square decimeter) and the length of the other side is 120 △ 6 = 20 (decimeter). The vegetable field of the parallelogram is 240 meters at the bottom and 125 meters at the height
RELATED INFORMATIONS
- 1. Two thirds of the students in class 1 of grade 6 subscribe to primary school students' mathematics newspaper, and three quarters subscribe to mathematics PHS At least ()
- 2. Sixth grade mathematics volume I exercise book page 34 question 4 people's Education Press
- 3. The correct one in the following statement is () A. A positive number and a negative number are opposite to each other B. the opposite number of any number is different from itself C. any number has its opposite number D. the numbers represented by two points on both sides of the origin on the number axis are opposite to each other
- 4. Two numbers with different symbols are opposite to each other to judge right or wrong urgent
- 5. What's the difference between parentheses and brackets What do you mean by (100200); (100200); [100200]; [100200]
- 6. Chinese Pinyin for Grade 6 Excuse me, should I call you aunt or uncle I need all the words in the sixth grade Chinese volume I to check, read, write and read the Chinese Pinyin volume. If it's not Chinese Pinyin, it's OK to just type. It's better to read and write the Chinese Pinyin volume~
- 7. How to write in pinyin
- 8. English translation Zhang Xiaoji, a scholar in Xuchang, married a rich woman in Tongli. The rich man had only one son, who was unworthy and was expelled. The rich man was ill and died, and he paid for his family wealth. Xiaoji and his post-treatment affairs were like courtesy. For a long time, his son was a beggar on his way. Xiaoji said with pity, "can you irrigate the garden?" he replied, "if you can irrigate the garden, you can eat. How lucky is it?" Xiaoji asked Xiaoji to irrigate the garden, Xiaoji is strange. Fu said, "can you manage the Treasury?" he replied, "you have got to irrigate the garden, and you have already gone out of sight to manage the Treasury?" what's the luck. "Xiaoji's envoy managed the Treasury. His son was quite obedient and had no other faults. Xiaoji Xu observed that he could make a new start and no longer have the old style, so he returned the property entrusted by his father
- 9. On the common phenomenon of multiple translations of one word in classical Chinese Which are the common words or word translation, I want to accumulate more, 555555!
- 10. Given that a + B + C = 1, a, B, C are positive numbers, it is proved that a ^ 2 + B ^ 2 + C ≥ 1 / 3
- 11. 1 2 3 4 56 7 8 9 10 11 12 13 14 15.......... 96 97 98 99 100 a B 1. Frame out the four numbers C D from the middle 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ............... 96 97 98 99 100 a b 1. Frame out the four numbers C and D, set the minimum number as X, and express the sum of the four numbers with integral a 2. Box out the five numbers B, C and D, and let the number in the middle be y, If their sum is equal to 85, write these five digits
- 12. What is the common multiple of 8 and 9 within 50?
- 13. Compare the size 10X3/8（ ）10 4X3/4（ ）4 3/8X10（ ）3/8 4/3X4（ ）4/3
- 14. Ask a math question about comparing size It is known that the quadratic function f (x) satisfies f (- x + 2) = f (- 2-x). Compare the sizes of F (negative half root sign 3), f (negative third π) and f (- 1)
- 15. One day, a, B and C do math problems. It is known that a has done 6 more than B, and C has done 2 times as much as a, 22 more than B, so they have done all of them______ A math problem
- 16. Three students have done a total of 20 math problems. If B does one more problem, it will be twice as many as a. if a does five less problems than C, how many math problems did each of the three students do
- 17. Compare size (1) Compare size ①1²＋5² ﹙﹚ 2×1×5 ②﹙－2﹚²＋3² ﹙﹚ 2×﹙－2﹚×3 ③（－4）²＋﹙－4﹚² ﹙﹚ 2×（－4﹚×（－4﹚ (2) Follow the example of ①, ② and ③ in (1) to write a formula respectively; (3) What regular conclusion do you find through observation, conjecture, exploration and induction? Please try to explain this regular conclusion
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- 19. Compare the size of - 8 / 9 and - 7 / 9
- 20. A preliminary mathematical problem In solving the equations ax + by = C (1), ax by = - 3 (2), due to carelessness, Xiao Ming mistook - 3 in equation (2) as 3, and got the solution as x = 3, y = 6. Xiao Gang mistook the value of B in equation (1), and got the solution as x = 15, y = 18. It is known that neither of them made any other mistakes. Try to find the value of a, B, C