解答數學難題，請盡快回答。plz~~~

[匿名]

2008-07-31 11:07 pm

有d數學問題想問，請回答者詳細(可以ge話show埋個step丫唔該~) 回答。thx~~~

1.
Brian played on-line games at home. With experience values started from 0. On the first day, he won 17 experience values. On the second day, he lost experience values. On the third day, he won 5 experience values. What are the final experience values that Brian got?

2.
Kelly uses 2 different kinds of thermometers to measure the temperature of a cup of drink. The results are as below :

Thermometer Temperature

A 3.8℃
_______________________________________________
B -2.3℃

Find the different of two temperature.

3.
In the formula k= (m+cl)/3,if m=3,k=5 and l=2,find the value of c.

4.
Write down the next two terms in the sequences 4,12,36,108,⋯
__________and___________

5.
If y=7-x, complete the following table.

x ) 1.___ 3_____ 2.__________ 3._____5_____ 4._________

y ) 1.__________ 2.____5______3.____________4.____6____

回答 (1)

waiting

2008-08-01 1:05 am

✔ 最佳答案

1. Brianplayed on-line games at home. With experience values started from 0. On thefirst day, he won 17 experience values. On the second day, he lost experiencevalues. On the third day, he won 5 experience values. What are the final experiencevalues that Brian got? 0+17+(-17)+(5)=5
2. Kellyuses 2 different kinds of thermometers to measure the temperature of a cup ofdrink. The results are as below :
Thermometer Temperature
A 3.8℃，B -2.3℃
Find the different of two temperature.
3.8-(-2.3)=3.8+2.3=6.1℃
3. Inthe formula k= (m+cl)/3,if m=3,k=5 and l=2,find the value of c.
k= (m+cl)/3
5=[3+c(2)]/3
15=3+2c
12=2c
c=6
4. Write down the next two terms in thesequences 4,12,36,108,⋯
324 and 972.
T(1)=4=4x31-1
T(2)=12=4x32-1
T(3)=36=4x33-1
T(4)=108=4x34-1
T(n)=aRn-1
5. If y=7-x, complete the following table.
(1) y=7-x，y=7-3，y=4
(2) y=7-x，5=7-x，x=2
(3) y=7-x，y=7-5，y=2
(4) y=7-x，6=7-x，x=1

參考: mself

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