林泓儒的部落格

.

6/10*5/10=30%

2.

8+c 16+c 24+c

3.

9x-12=4

X=16/9

4.

Y=-2/3x+24

Y=0 , x=36

5.

Y=-x+6 =>f(3)=3

Y=x-6 =>f(9)=3

6.

A:81^n

1

7.

X=2

X=-3

8.

9+12=21

0

4

7

15

22

26

9.

9+2*90+3*401=1392

10.

(n/x)*a+(n/2x)*a+(n/3x)*a=n

(N*a/x)*11/6=n

A=6x/11

11.

(3b-3)*b=36

B^2-b=12

12.

8 =>1

6 =>6/8

Sqrt(x)=6/8

X=9/16

13.

20% => electricity by a household by water heater

80%

0.5a =>water heater

Rest =>a

0.5a*0.2x/(0.5a*0.2x+a*0.8x)=1/9

14.

3 4 8

3

15.

Game 2 7 10

2/3

16.

Game 3 5 6 7 9

4/5

17.

1 square units = 9 square feet

9*2.5=22.5

18.

George =>x

Sue =>27.5+x

Rosanna =>x-12.5

X+5=450 x=445

19.

0.7把0.5包在裡面，最大為0.5

20.

4  -2  1  -0.5  0.25

4+2=6