吾識做英文數- 邊個可以教我`???

2008-08-26 2:05 am

1. The sum of -4 and a number is 8. Fing the number.
2. The result of a number minus -2 is 5. Find the number.
3. Rocky went 9 floors up by a lift to the 6th floor. Which floor did he start going up?
4.The temperture of a city was -10 yesterday morning.
(a) At noon, the temperture of the city went up by 6℃. Find the temperture of the city at noon.
(b) In the evening,the temperture of the city was -12℃. Comparing with the temperture at noon, find the change in temperture.
5.A submarine moves 50m up from 100m below the sea level, and then moves80m down. Express the final location of the submarine in a directed number.
6.One day, Kevin forget to bring his wallet. In the morning, he borrowed $12 from Vivian for breakfast. In the afternoon, he borrowed $22 from her again for lunch. If Kevin returned $20 to Vivian $20 the next day, how much was he still owing Vivian?

更新1:

要列式..plz 吾該= =

回答 (4)

用戶186250

2008-08-26 3:04 am

✔ 最佳答案

1) -4 + x = 8
x = 8 + 4
x = 12

2) x - (-2) = 5
x + 2 = 5
x = 5 - 2
x = 3

3) x + 9 = 6
x = 6 - 9 = -3

4) a) -10 + 6 = x
x = -4

b) -12 - (-4) = x
x = -8

5) -100 + 50 - 80 = -130m

6) 12 + 22 - 20 = $14

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用戶7603

2008-08-27 2:16 am

.總數的 -4個和數字是8.鐵數字.
2.結果的數字負的 -2是5.發現數字.
3.岩石的去9個地面向上附近舉起到第6個地面. 他開行哪個地面向上?
4.temperture的城市是 -10個昨天早晨.
(一) 在中午,temperture的城市上升附近6℃. 中午發現temperture的城市.
(b) 在夜裡,temperture的城市是 -12℃. 中午相比temperture,發現變化在temperture.
5.潛艇移動50 m向上從100 m在下面海平面,而且移動80 m向下. 快車最後定測的潛艇在指引數字.
6.有一天,凱文忘記拿來他的錢包. 在晨間,他借 $12個從維維安為了早餐. 在下午,他借 $22從她的再午餐. 假如凱文歸還 $20個到維維安 $20第二天,他仍然在欠多少維維安?

2008-08-25 0618:23: 補充

2008-08-26 18:17:18 補充：
. 12
2. -10
3. 3
4. a -4'c
b -8'c
5. 70m below the sea level
6. $14

very easy= =
you need to try to do more by yourself!
) -4 + x = 8
x = 8 + 4
x = 12

2) x - (-2) = 5
x + 2 = 5
x = 5 - 2
x = 3

3) x + 9 = 6
x = 6 - 9 = -3

4) a) -10 + 6 = x
x = -4

b) -12 - (-4) = x
x = -8

5) -100 + 50 - 80 = -130m

6) 12 + 22 - 20 = $14

參考: 網址, 補充

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[匿名]

2008-08-26 2:19 am

1. 12
2. 3
3. -3
4. a)-4℃
b)the temperture increased 8℃
5. 130m below the sea level
6. $14

2008-08-25 18:22:16 補充：
4 b)the temperture decreased 8℃

參考: me

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hoon

2008-08-26 2:12 am

1. 12
2. -10
3. 3
4. a -4'c
b -8'c
5. 70m below the sea level
6. $14

very easy= =
you need to try to do more by yourself!

👍 0 👎 0

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