標題:
幫我做條數（２０分）
發問:
33. 22 is added to a number, which is then divided by 4, giving the result 16. Find the number.34. If the sum of x and 75 is 120, what is x?35. 19 is equal to a number increased by 9. What is the number?36. The sum of twice a and twelve is 32. Find a237. Two cars leave a city at the same time, one... 顯示更多 33. 22 is added to a number, which is then divided by 4, giving the result 16. Find the number. 34. If the sum of x and 75 is 120, what is x? 35. 19 is equal to a number increased by 9. What is the number? 36. The sum of twice a and twelve is 32. Find a2 37. Two cars leave a city at the same time, one travels west at 150 km per hour and the other east at 50 km per hr. After how many hours will they be 300 km apart? 39. Mr Smith drives his car from his home to visit a friend. He travels 40 km/hr and needs 30 min to reach his friend’s house. How fast will he to travel if he only spends 20 min? what is the increase of speed?
33. 22 is added to a number, which is then divided by 4, giving the result 16. Find the number. Let the number be X. 22+X/4=16 22+X/4*4=16*4 22+X=64 X=64-22 X=42 34. If the sum of x and 75 is 120, what is x? X+75=120 X=120-75 X=55 35. 19 is equal to a number increased by 9. What is the number? Let the number be a. a+9=19 a=19-9 a=10 其它不明
其他解答:
33.22 + ? / 4 = 16 ? = 42 ( 16 * 4 - 22 = 42 ) 34.x + 75 = 120 x = 45 ( 120 - 75 = 45 ) 35.? + 9 = 19 ? = 10 ( 19 - 9 = 10 ) 36.a2 + 12 = 32 a = 10 ( ( 32 - 12 ) / 2 = 10 ) 37.300 / ( 150 + 50 ) = 1.5( hours ) 60 60 39.40 / _ * _ = 60( km / hr ) 30 20 60 - 40 = 20( km/hr ) 2008-11-13 21:12:33 補充： 39.40 / 2 * 3 = 60( km / hr )|||||咁你也答下ｌａｌａｌａｌａｌａｌａｌ|||||我不懂英文的!!!!!!!
幫我做條數（２０分）
發問:
33. 22 is added to a number, which is then divided by 4, giving the result 16. Find the number.34. If the sum of x and 75 is 120, what is x?35. 19 is equal to a number increased by 9. What is the number?36. The sum of twice a and twelve is 32. Find a237. Two cars leave a city at the same time, one... 顯示更多 33. 22 is added to a number, which is then divided by 4, giving the result 16. Find the number. 34. If the sum of x and 75 is 120, what is x? 35. 19 is equal to a number increased by 9. What is the number? 36. The sum of twice a and twelve is 32. Find a2 37. Two cars leave a city at the same time, one travels west at 150 km per hour and the other east at 50 km per hr. After how many hours will they be 300 km apart? 39. Mr Smith drives his car from his home to visit a friend. He travels 40 km/hr and needs 30 min to reach his friend’s house. How fast will he to travel if he only spends 20 min? what is the increase of speed?
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最佳解答:33. 22 is added to a number, which is then divided by 4, giving the result 16. Find the number. Let the number be X. 22+X/4=16 22+X/4*4=16*4 22+X=64 X=64-22 X=42 34. If the sum of x and 75 is 120, what is x? X+75=120 X=120-75 X=55 35. 19 is equal to a number increased by 9. What is the number? Let the number be a. a+9=19 a=19-9 a=10 其它不明
其他解答:
33.22 + ? / 4 = 16 ? = 42 ( 16 * 4 - 22 = 42 ) 34.x + 75 = 120 x = 45 ( 120 - 75 = 45 ) 35.? + 9 = 19 ? = 10 ( 19 - 9 = 10 ) 36.a2 + 12 = 32 a = 10 ( ( 32 - 12 ) / 2 = 10 ) 37.300 / ( 150 + 50 ) = 1.5( hours ) 60 60 39.40 / _ * _ = 60( km / hr ) 30 20 60 - 40 = 20( km/hr ) 2008-11-13 21:12:33 補充： 39.40 / 2 * 3 = 60( km / hr )|||||咁你也答下ｌａｌａｌａｌａｌａｌａｌ|||||我不懂英文的!!!!!!!
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