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Hello! Total score of A, B and C: 91*3=273 points.
Total score of B, C and D: 89*3=267 points.
The score of 2 times B C + 1 time A D: 273 + 267 = 540 points.
1 time B C score: (540-95*2) 2 = 175 points.
A: 273-175 = 98 points.
C: 267-175 = 92 points.
B + C + D = 120
A + C + D = 126
C + D = 80
Then: A=46
B = 40 A + B + C + D = 86 + 80 = 166 average =
Solution: Let A, B, and C be x, y, and z, respectively, then: x+y=18, x+z=17, y+z=19, and the solution is: x=8, y=10, z=9
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1 The sum of the scores of A, B and C is 91*3=273, and the sum of the scores of B, C and D is 89*3=267
273-267=6 is the difference between A's score and D's score.
95*2+6)/2=98……A 98-6=92......Fourth.
2 The total weight of ethylene propylene is 120 kilograms, and the total weight of ethylene and propylene is 126 kilograms. A + B + 2 C + 2 D = 120 + 126 = 246
A + B + C + D = 246 - C and D share weight (40 * 2 = 80) = 166 average: 166 4 =
3 18*2+19*2+17*2=108……Twice as many trees were planted in A, B and C.
102/2=51……A, B and C co-planted.
A: 54-B = 54-19 * 2 = 16
B: 54-A-C = 54-17 * 2 = 20
C: 54-A-B = 54-18*2=18
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The first question A 98 B 92, the second question kg, the third question A 16, B 20, C 18
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1: Base area multiplied by water surface rising height.
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The roof of the venue was peculiar, like a bulging sail. The skylight not only allows the children to know how to get from"None""Yes", from"Virtual""Real", and more realistic, more expansive, more complex, more tangible than anyone else sees. (add related words).
Because the outside world is wonderful, we go out of the classroom, dissolve into life, and taste the taste of life. (add related words).
Standing on the threshold of the new millennium, thinking of the heavy responsibility entrusted to us by the times, we must study diligently. (changed to a double negative sentence).
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Like the waves and ripples of the sea, and , as well.
Let's just let it, can't it not.
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