一題F.1 Maths ...

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Tsz Yan

2007-01-19 7:19 am

The highest speeds of a plane and a racing car are 2436.5km/h and 306.56km/h respectively. Estimate how many times is the highest speed of the plane to that of the racing car.
A. 0.125 times
B. 8 times
我唔識解條題目...
佢想問個plane既速率係racing car既幾多times, 定係問racing car既速率係plane既幾多times?
我d英文唔係太好, 請教教我...

更新1:

我仲想問呢題... For the polynomial 1 + 2ab^6 - 7a^4b^3 - 5a^2b^3 , find the number of terms and the cofficient of the term with degree 6.

更新2:

Number of terms The required coefficient A. 3 2 B. 3 -7 C. 4 2 D. 4 -7

更新3:

我覺得個ans.應用係D,但其他人話係B, 我想知個ans.究竟係B or D?

更新4:

Number of terms , The required coefficient A. 3 , 2 B. 3 , -7 C. 4 , 2 D. 4 , -7 請在今日回答我的問題... THX~

回答 (4)

TKK

2007-01-19 7:37 am

✔ 最佳答案

Estimate how many times is the highest speed of the plane to that of the racing car.
譯
估計多少時間是這飛機向那賽車的最高速率
即
( 2436.5 / 306.56 ) km/h

=7.9478731732776617954070981210856.....
=8 單位時間(準確至最接近整數)
所以答案是Ｂ

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ChanSamson

2007-01-24 2:29 am

B!!!!!!!!!!!!!

參考: [email protected]

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[匿名]

2007-01-19 7:31 am

飛機(plane) 最高的速率是2436.5 km/h, 賽車(racing car) 最高的速率是306.56 km/h, 那飛機的最高的速率賽車的多少倍。即2436.5/306.56 ~ 8

所以答案是B. 8 times

參考: 自己

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Tenkarai

2007-01-19 7:26 am

plane既速率係racing car既幾多times

In English, the ratio of (A to B) means (A / B).

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