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Anonymous users2024-02-051) CD AM CB AN CDA= ABC AC BISECTED MAN DAC= CAN=120° 2=60° AC=AC, SO ACD ACB AD=AB In rt adc, c=30° then AC=2AD and AD=AB, so AC=AD+AD=AD+AB (2) Do ce am CF an from (1) to get ace ACF then CE=CF......dac= caf=60° because e= f=90°......adc+∠cde=180° ∠adc+∠abc=180° ∴cde=∠abc……3 Ced CFB dc=bc from 1 2 3 Conclusion 1 is established AE=AC 2 in CEA, then AD=AE-DE=AC 2 - DE In the same way, AB=AF+FB=AC2 + BF is obtained from CED CFB BF=DE AD+AB=AC 2 +AC 2=AC Conclusion 2 is true, I played for half an hour, I was tired, and I did it myself.
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Anonymous users2024-02-04Since there are three piles of the same, each pile is one-third of all the pieces, the first pile and the second pile are combined, and the black and white account for half each, that is, half of 2 3 is white, the other half of 2 3 is a sunspot, and the third pile of sunspots occupies 2 5 of all sunspots, that is to say, the first two piles together occupy the total number of pieces 1 3 The sunspots occupy 3 5 of the total number of sunspots, indicating that the total number of all sunspots is 5 9 of the total number of black pieces, and the white pieces are 4 9.
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Anonymous users2024-02-03The least common multiple of 32 and 24 is 192, so this packet of sugar has the least: 192 ten 4 = 196 (block).
2. Hupai. Because 37 is a prime number and cannot be decomposed, the number of 4th graders cannot be grouped evenly.
Grade 3: 40 can be divided into: 2*20, 4*10, 5*8, three situations.
Grade 5: 51 can be divided into: 17*3
6-year Yunqing pants grade: 65 can be divided into 13*5
Because the single digit of one prime number is 1, the other must be 7;
If the sum of two tens' digits is 16, it may be , because is a composite number, so one of the numbers can only be 97 and the other 71
97 ten 71 = 168, in line with the topic.
What percentage of the total number of newspapers sold in this hour is a fraction of the total number of newspapers?
5 36) Ten (1 48) Ten (1 16) Ten (11 72) Ten (5 48) Ten (1 8) = 29 48
Can you tell which newspaper has the most sales?
After comparing the scores, 11 72 is the largest, so the Yangtze Evening News has the largest sales.
exists, shifts the term to obtain: -m-2>(3-m)x, and it is easy to know that if m exists, the system of equations: >>>More
b=x-y then a+b= ?What about A-B?
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1 part of blue flower, 2 parts of yellow flower, 3 parts of safflower, blue flower accounts for 1 6 of the total area, yellow flower accounts for 1 3, and safflower accounts for 1 2 >>>More